Construction training

This article gives tips on training the members-only Construction skill.



Introduction
Construction generally is an expensive skill to train. Methods to train without losing money are few.

At low-level Construction levels, players typically make their own planks, use clay or limestone, and explore different rooms and furniture. To advance, most players use oak, teak, or mahogany planks, building and removing doors, wardrobes, or tables, getting only experience in return for used materials. Even if the planks are made by oneself, one still loses money by paying for use of the sawmill or Plank make spell.

Typical costs for Construction experience vary from 5.5 (using player-made oak planks) to 17 coins per point (mahogany planks bought from the Grand Exchange). Sacred clay hammers cut costs in half.

Understanding Experience Earned
Most built items require multiple construction materials to make. The experience gained is calculated from the experience per construction material. I.e., the experience gained from making two of an item that requires 2 Oak planks gives exactly the same experience as a single item that requires 4 Oak planks. All items take the same time to make, making the single item (in this example) faster for the same experience and cost.

Cost of Earning Construction Experience
Most materials used in Construction cannot be made with skills and must be bought from suppliers or the Grand Exchange. Wooden planks are made by handing over logs and money to the Sawmill operator. Construction materials that can be made by the player are Soft Clay, Limestone bricks, Molten glass, and Steel Bars. Even these items are normally used in combination with other bought Construction materials, except for a very few, low experience items such as Clay fireplace (3 soft clay for 30 experience).

To reach high levels of Construction, millions of coins are required. A source of income is needed to pay for materials.

Balancing Time Spent "Spending" vs. Time Spent Earning
To gain construction experience you need to spend money, and therefore any training regime must include time not earning experience but earning money. There are many options available (oulined in the rest of this article) to balance speed of earning experience vs cost of earning experience. The optimum balance for any player depends on the players ability to earn money in a given time. This ability changes with time and general advancement through Runescape.

Therefore to maintain the optimum balance, a player must constantly re-evaluate any marginal time-consuming processes, weighing any tiny amount of lost time against the probable money they could have earned in the lost few seconds.

The fastest possible practical plan is probably making Mahogany tables, using Mahogany planks bought from the Grand Exchange, not travelling but using a Demon Butler to bring the planks, constructed with "make all" on a workbench and dropped to the ground after making, without using a Sacred clay hammer. However even small tweaks to this plan would save millions, and significantly cheaper plans would save as much as a hundred million coins before the player earned his or her skillcape. Alternatively, if the player has billions to spare, there are even faster plans possible!

Non-Planks
This chart shows the experience given per object when each object is used. The cost per experience point is based on Grand Exchange prices. The cost of "free" components (i.e., the components that can be made with effort only) shows the price one could sell those items for, if you had not used them on Construction.


 * {|class="wikitable"

!colspan=2|Item !Experience given !NPC Cost !Cost/XP !GE Cost !Cost/xp
 * [[File:Molten glass.PNG]]
 * Molten glass
 * 1
 * n/a
 * n/a
 * [[File:Clay.PNG]]
 * Clay
 * 10
 * n/a
 * n/a
 * [[File:Soft clay.png]]
 * Soft clay
 * 10
 * n/a
 * n/a
 * [[File:Bolt of cloth.png]]
 * Bolt of Cloth
 * 15
 * 650
 * n/a
 * n/a
 * [[File:Steel bar.gif]]
 * Steel bar
 * 20
 * n/a
 * n/a
 * [[File:Limestone.PNG]]
 * Limestone
 * 20
 * 10 or 17
 * or
 * [[File:Limestone brick.gif]]
 * Limestone brick
 * 20
 * n/a
 * n/a
 * [[File:Gold leaf.PNG]]
 * Gold leaf
 * 300
 * 130000
 * [[File:Marble block.PNG]]
 * Marble block
 * 500
 * 325000
 * [[File:Magicstone.PNG]]
 * Magic stone
 * 1000
 * 975000
 * }
 * [[File:Limestone brick.gif]]
 * Limestone brick
 * 20
 * n/a
 * n/a
 * [[File:Gold leaf.PNG]]
 * Gold leaf
 * 300
 * 130000
 * [[File:Marble block.PNG]]
 * Marble block
 * 500
 * 325000
 * [[File:Magicstone.PNG]]
 * Magic stone
 * 1000
 * 975000
 * }
 * 500
 * 325000
 * [[File:Magicstone.PNG]]
 * Magic stone
 * 1000
 * 975000
 * }
 * Magic stone
 * 1000
 * 975000
 * }
 * }
 * }
 * }

Notes
 * You can turn Clay into Soft clay by adding water to it. This can be done in a player-owned house using a garden or kitchen water source.
 * You can turn Limestone into Limestone bricks using a chisel on it. This gives Crafting experience.

Planks

 * {|class="wikitable"

!colspan=2|Item !XP Given !GE Log Cost !Sawmill Fee !Total Cost !Cost/XP !GE Plank Cost !Cost/XP
 * [[File:Plank-inv.png]][[File:Bronze nails.png]]
 * Plank & Bronze nails
 * 29
 * + nail
 * 100
 * [[File:Oak plank.gif]]
 * Oak plank
 * 60
 * 250
 * [[File:Teak plank.png]]
 * Teak plank
 * 90
 * 500
 * [[File:Mahogany plank.png]]
 * Mahogany plank
 * 120
 * 1500
 * }
 * [[File:Teak plank.png]]
 * Teak plank
 * 90
 * 500
 * [[File:Mahogany plank.png]]
 * Mahogany plank
 * 120
 * 1500
 * }
 * [[File:Mahogany plank.png]]
 * Mahogany plank
 * 120
 * 1500
 * }
 * Mahogany plank
 * 120
 * 1500
 * }
 * }
 * }
 * }
 * }
 * }

Notes:
 * Slightly different experience, cost, and cost/experience point is given for different metal nails.
 * The cost of any extra transportation methods to get to the Sawmill are not included.
 * For information on the costs for using a servant to convert the logs, see Calculators/Construction Materials.

Costs for Different Materials (levels 80 to 99)
The cost to get from level 80 (1,986,068 experience) to level 99 (13,034,431 experience), using GE Plank price, is:


 * 184,140 Oak planks (60 xp) * 0 coins = 0 coins for cheaper slower experience
 * 122,760 Teak planks (90 xp) * 0 coins = 0 coins
 * 78,917 Mahogany planks (140 xp) * 0 coins = 0 coins
 * 22,096 Marble blocks (500 xp) * 0 coins = 0 coins

Using servants to make the planks cheapens teak and oak considerably.

Run to Bank
Running is free, but Construction requires large quantities of materials, and generally player-owned house portals are not in particularly convenient locations for running to and from banks. See POH portal for information on choosing a house location.

Teleport to House
Generally, after advancing beyond lower levels, players teleport to and from their house to a bank, which consists of teleporting to the house via runes (1 Law rune, Earth rune, and Air rune. To save an inventory slot, use a staff. To save two slots use a Teleport to House Tablet spell at greater cost.

Teleport to House costs coins for each cast with all the runes above;  coins when using dust runes,  coins when using a air or steam staff,  coins when using an earth or mud staff, and  coins when using a Law staff. A teleport tablet costs coins.

Teleport to Bank
All teleports built into the house are free once built. The closest teleport portal to a bank is Varrock (after selecting GE teleport location), but even closer is Edgeville from a mounted Amulet of Glory. Or use a Ring of duelling to teleport to Castle Wars bank, then Balloon to the Sawmill.

Teleport to Sawmill

 * The cheapest way to the Sawmill is to run from the Grand Exchange (north and then east along the outside of the wall) or Varrock east bank.


 * A Digsite pendant cannot be bought, but can be made with a Ruby necklace and a Cosmic rune while wielding a Staff of fire, which costs for 5 teleports.  This works out to be  coins each teleport.


 * If players transport to Castle Wars bank (using a Ring of duelling to teleport from the house - tradeable at a cost of /8= coins per teleport), then Balloon transport system can be used to the Sawmill for the cost of one willow log - another coins. Because of weight limitations you cannot carry a complete inventory of logs without at least 3 weight reducing items, and you cannot use a familiar to carry extra items.

Three-Way Teleport
One three-way teleport is going to the bank, then to the sawmill, then to the house, and back to the bank. The fastest is the bank in Edgeville via a mounted Amulet of glory, Sawmill via worn Digsite pendant, House teleport via Law staff and two runes, or Teleport tab if you want one extra inventory slot. The digsite pendant teleport has slightly more running than Balloon, but the ability to use a Beast of burden familiar normally outweighs this disadvantage for players able to make pendants.

Trip Time
Note: This section does not apply if the player is using Servants.

With the correct choice of teleport techniques, very little running is required to make a round trip (either two-way or three-way). This means that the total trip time is very largely dependant on how fast the player can click and select various options. To maximise the XP earned per hour depends on balancing the fastest possible round trip (i.e. least clicks) vs. a slightly slower round trip maximising the XP earned per trip. Players therefore vary in their precise technique - fast clickers tend to prefer the fastest possible trip. Players on slow PCs or laggy connections tend to prefer maximising the XP per trip. Note that because of the relatively low cost of teleport compared to the cost of an inventory, the teleport trip cost tends not the be a factor in an optimised trip plan.

Plan Round Trip to Optimise Inventory

 * To maximise experience per trip, you need to maximise the number of planks/logs you transport per trip.
 * If you carry the needed tools to construct items (ie saw and hammer) you lose two plank spaces. Alternatively carry the two extra planks and take the tools from your tool shelves every trip, but this is slower per trip.
 * You need to carry money to the sawmill. If you carry the exact money you need for a trip, after using a house teleport tablet you will have two spare slots to take tool from the tool shelves. Alternatively, if you carry a large amount of money, you do not need to get money from the bank every round trip.
 * If you are making flatpacks, you do not need two spare slots to take tools at all, because you do not need to be in building mode and can therefore can drop 2 planks, and pick them up again later.
 * If you are using a beast of burden, you need at least one spare slot to swap logs/planks between the two inventories at the Sawmill. A technique is to drop one or two planks to make this space and pick the planks when done. Alternatively you may decide that it is quicker to have a spare slot or two.
 * Bring materials in amounts equal to the highest multiple of the required materials to construct your items that is possible per trip (e.g., carry a multiple of 8 for larders, or 10s for Oak doors) as this reduces weight by not bringing extra material that won't be used. Alternatively, build something else to use the remaining planks (e.g. if you are carrying 26 planks, build two oak doors and then build two oak armchairs to use up the last 6 planks). With careful planning this does not need to slow down a round trip very much.
 * Making Flatpacks can be a very fast way of using up almost any "left-over" planks. For instance "Make All" Oak drawers will use up any even number of oak planks.
 * If you are three-way teleporting, always maximise your inventory of planks. Bank your unused planks and when you have enough planks, skip the sawmill teleport for a cycle.

Using Familiar Beast of Burdens
The maximum number of planks that can be carried per trip is 58.

Set the left-click option of the Summoning Icon to be "Take BoB".

Experience per Trip
For number of planks carried. Higher numbers require Beast of Burdens.

Servants
An alternative to travelling between you house and bank is to use Servants to bring things from the bank to your house. This is faster than travelling yourself because you can build while the servant is making the trip. Better servants make the round trip faster.

To give instructions, speak to the servant. However it is quicker if you "use" noted items on your servant - you will be asked whether you want it to be banked or to be unnoted. If you use an unnoted log on the Cook or the Butlers, they can take a specified amount to the sawmill.

Servant Cost
Note. To make planks via a servant costs two trips per load - one trip to the bank to get logs, and a second to the Sawmill to make them into planks.

Flatpacks
Flatpacks used to be very rarely used for training because they were slow experience - it was much faster to build and remove furniture instead. However, after a recent update they have a "build all" option that means they can be faster than using hotspots.


 * Flatpacks can be sold on the Grand Exchange, however the return is very poor. The volume traded is also very slow. Not every flatpack is worth selling. Flatpacks can also be sold to shops for even poorer prices.
 * Flatpacks can be alched, but the return is less than the cost of the runes.
 * Flatpacks may be sold to Advisor Ghrim in exchange for coins in the treasury of your kingdom, after doing part of the Fremennik diary. In principle he gives 10% of the material costs. How this is calculated is not clear, but the value of a flatpack is less than 10% of the GE price of a log plus the Sawmill fee. Since the Sawmill fee is fixed, this suggests that he values the logs at less than GE price but greater than the max store price.
 * Advisor Ghrim will not take noted items and the player must be wearing Fremennik sea boots 3


 * Flatpacks can be traded in at the Mobilising Armies activity for Investment credits. These credits are used to get reward credits which can be used to get money or other rewards. If you choose money, you can get a refund of the cost of the flatpacks.


 * Flatpacks can be made while not in building mode, and time spent in a house outside of construction mode gives chances of receiving a Strange rock.


 * Outside of building mode items can be dropped, whiich may be the most convenient way to get rid of the flatpacks.


 * Flatpacks are rarely stored if using a Servant, because the return is marginal or worse given the additional cost of using a servant trip to bank them. However, if you value the flatpacks at Advisor Ghrim rates, higher value flatpacks can be worth banking. Use a BoB to accumulate enough flatpacks to make the servant journey efficient.

Flatpack Return Value
The following table shows the return on an example flatback item used for training (note all items with the same plank requirements will have different GE Sell prices but the same Advisor Ghrim return). The poor return should be compared with the total loss if an item is removed or dropped.

Note: Advisor Ghrim will value slightly less than the nominal 10% value. As a snapshot, on a particular day he offered a return on some teak items that valued the teak log at 63 coins, assuming he gives full credit for the Sawmill fee. On the same day, the GE teak log price was 148 (plus 500 sawmill) and a teak plank 766, giving a real return of 9.7% or 8.2% respectively.

Sacred Clay Hammers
One way to decrease the cost of Construction is to use Sacred clay hammers. A Sacred clay hammer is a reward from the Stealing Creation mini-game. It is used to double the XP earned from each item constructed. However, it takes time to get the hammers, and if you count the time it takes to get the hammers, the overall construction experience rate decreases. Because training Construction costs money, any training regime must include doing something else, earning money to spend on construction. In this context, spending time playing Stealing Creation can be considered a valid part of construction training. See later section for a time/cost breakeven analysis of Sacred Clay hammers.

Returnable Item Contruction
There are a few decorative items that can be built that require a special construction item (e.g. a Mounted sword requires a sword as well as two teak planks to build). Building these gives more XP than the planks alone, but if the item is then destroyed, the construction item is returned. This can be repeated continuously, effectively increasing the XP given per plank.

Notes:
 * Armour stands are rarely used for training because of the disadvantage of needing 3 spare inventory slots for the armour each time you remove the stand. However, using servants to hold the planks, this technique is viable.
 * Mounted stuffed fish trophies do not return the stuffed fish.
 * Profound Armour Stands have the distinction of being the cheapest possible construction training.

Level 1 to 33
At 1 to 33 Construction, one cannot have a butler. Train by using Rings of duelling or Amulets of glory to teleport to a bank to get more planks, and using a House teleport spell or tablet to get back to your house. The Mobilising Armies teleport works too for teleporting to a bank.

A slower way to get planks is to run to Falador, withdraw a full inventory of planks, and run back to your house in Rimmington. Some faster ways to bank are to move your house to Taverley because the run time to the house portal is shorter, or to run to Port Sarim and travel to the Void Knight Outpost, then run back. To help with the running, take off heavy armour and wear weight-reducing clothing. Running to the bank is much slower than teleporting.

For the first levels of Construction you need to buy or make planks and nails. Start by making crude wooden chairs in your parlour and removing them. The requirements for them are 2 planks and 2 nails. Repeat this process until you are out of planks or reach level 17 Construction. It take 96 planks and nails (but make/buy more nails in case they bend) to get to 17 Construction. If you are going from 1 to 33, it will require you to make 277 crude wooden chairs, which is 554 planks, and however many nails that follow.

There is another way to train at low construction levels that is cheaper than using planks, although it is slower. Have your house at Rimmington and mine some clay in the mining area north-east of the portal. Use a bucket to fetch some water from the well in southern Rimmington and use it with the clay to create Soft clay. Alternatively (and much more quickly) a bracelet of clay can be used. Repeat the softening of the clay until all the clay has been softened. Next, you should go into your house and build a Parlour for 1000 coins (if you have not already) and build a clay fireplace in it. Afterwards, remove the fireplace and repeat until you are at your desired level. The clay fireplace is a good choice because it gives 30 construction experience, however it requires level three to build, so follow the above process to reach level 3. This way, you can level up more quickly, and you do not have to travel as far. This is also very useful due to the expenses of gathering the materials can be kept very low. This is a highly recommended strategy for low-level and poor players to use.

You may also keep on building Oak dining tables and taking them down over and over till you reach level 33. This the fastest and cheapest way to train construction.

If you use a Sacred clay hammer you get to level 33 spending half.

Level 33 to 52 or 74
After level 33, you can make oak larders in your Kitchen. Creating these costs 8 oak planks. It will take 1760 oak planks to go from 33 to 52 construction building oak larders and another 16,211 oak planks to get to 74 construction. To build these at the fastest speed, a butler or demon butler should be used. At level 40, you should go to the Servants' Guild to hire a Butler, and at level 50, you should hire a Demon Butler though this is quite an expensive way considering demon butlers cost 10k per 8 uses. Servants can be used to bring you planks, thus speeding up your construction training. The fastest way to do this is right click the servant and select the option to fetch items from the bank. If using the Butler, you can make an average of 2.5 oak larders per round; if using the Demon Butler, you can make an average of 3.25 oak larders per round.

When making oak larders with a butler or demon butler, repeatedly request planks, then build and remove larders. With the regular butler, you can alternate 2 and 3 larders per round, whereas with the demon butler, you can build 3 larders on 2/3 of the rounds and 4 larders on 1/3 of the rounds. Carry cash, a hammer, and a saw.

It is possible to save money by not using a butler and/or by making the planks yourself. A possible method is to woodcut oak logs outside your house, then enter your house and send your butler to the sawmill to make planks. Then, make oak larders and leave to cut more oaks. Alternatively, do not use a butler and instead bank (teleport to Castlewars and then teleport back with Home teleport, or alternatively run to Yanille bank from your house in Yanille) after every 3 larders to get more planks. However, it will be much slower experience if you use either of these methods and the money saved may not be worth the extra time spent.

Teak Larders may be made at level 43, but they take 2 bolts of cloth in addition to 8 teak planks, and this extra material required raises the cost significantly and slows down experience due to the need to request 2 types of materials.

Players should stop making oak larders at level 52 if they wish to train using mahogany planks. Mahogany tables are the fastest construction experience in the game, but are not very commonly made because they cost more per construction experience than oak. Players who wish to continue using oak planks should make oak larders to level 74 before switching over to oak dungeon doors.

Level 74 to 99 (Cheaper method)
If you choose to continue using oak planks, you should switch to oak dungeon doors at level 74 construction. Oak dungeon doors take 10 oak planks each, whereas oak larders take 8 oak planks each. This difference makes oak dungeon doors faster experience than oak larders, because more oak planks can be used per construction action. This results in a higher experience per hour, even though the butler still only brings you the same number of planks. It is possible to get over 300k construction experience per hour with oak dungeon doors without Stealing Creation Hammers, but experience rates vary widely from person to person; some people only get 200k experience per hour, while others can get 400k experience per hour.

Level 52 to 99 (Expensive method)
One of the absolute fastest ways to 99 construction from level 52 is to build Mahogany tables in the Dining room, using a Demon Butler to bring you planks, building 4 tables per round, and 5 every third round. Players who are somewhat slow at building and removing tables may wish to save a bit of money by using a normal butler and building 3 tables per round and 4 every third round.

Experience per hour rates for building mahogany tables vary widely among players. Some players get around 450k experience per hour (these people often use a normal butler), while some get over 600k (these people use demon butlers). Some players are even able to get over 700k experience per hour. The theoretical maximum experience per hour with mahogany tables is somewhere around 900k experience per hour, and some players can get over 800k experience per hour. (All these experience rates are given WITHOUT Sacred Clay Hammers.) Interestingly, although practice helps, it is possible to get the full experience rate- the fastest experience in construction without spending ridiculous amounts of money- right at 52, and potentially go from level 52 to level 70 in only an hour, or a bit over an hour.

It is also worth noting that mahogany planks are the best planks to make using the Plank make spell, which is a very fast way to train magic, and therefore a player may find it convenient to combine this spell with building Mahogany tables to avoid a trading step.

Cheapest Methods
Other ways to save money training construction include using entirely different methods. What follows is a guide to very cheap ways to train construction. However, very few people actually train construction to a high level using methods like what follow because of the slow experience rates they give.

Level 1 to 33
Making clay fireplaces is a cheap way to train Construction at low levels. Mine clay outside Rimmington. Make soft clay. Enter your house to build fireplaces.

Level 33 to 99
At level 33, you can build Stone Fireplaces in your bedroom with 2 Limestone bricks each. They give 40 experience each.

The fastest way to get the limestone bricks is to buy the bricks from the stonemason in Keldagrim, where they are sold for 21 coins each. The 650810 bricks needed for level 33 to 99 construction will cost about 17 million coins. This is only about 1.3 coins per construction experience, but this would take 24104 trips to Keldagrim bank without a familiar and would be a very slow process. Actually using the bricks to make fireplaces would be an even slower process.

You could save about 4 million coins if you buy from Mort'ton. The nearest bank is Burgh de Rott (after In Aid of the Myreque). However, this would slow down brick collection process even further and likely would not be worth the time.

The limestone bricks can be obtained for free if you mine limestone near the Odd Old Man, craft your mined limestone into bricks, and then use the Balloon transport system to get to a bank and back. then This is practically free, but would only further slow down the brick collection processes.

Summary
It seems that the most popular way to get 99 construction is to use oak planks. The second most popular way is to use mahogany planks. Teak planks probably would be third most popular. It is unclear if anyone at all actually gets 99 construction using limestone, as it will take an extremely long time. Even though limestone is cheaper, the vast amounts of time it takes could instead be used for doing other things (such as making money in various ways), and then this money could be used to buy oak planks for 99 Construction with less total time spent than using limestone to get 99 Construction.

Time/Cost Breakeven Analysis of Sacred Clay Hammers
This section is intended to help you choose exactly how you want to train construction at medium and high levels. Generally, you choose either oak dungeon doors or mahogany tables, and both of those methods can be done with or without Sacred clay hammers (SC hammers). SC hammers disintegrate after a certain value of XP gained.

For the purposes of these calculations, the following values will be assumed:

This is counting oak planks roughly 650 coins each, mahogany planks roughly 1910 coins each, and the use of the Demon Butler. Note these are not live GE prices.


 * Number of SC hammers obtained per hour: 5 (This is possible in a skilling-only Stealing Creation game.)


 * SC hammers last for 50750 construction experience each with oak planks, which is 25375 bonus experience, and 51415 with mahogany planks, which is 25690 bonus experience. (The experience maxes out mid way through the last mahogany table) Therefore, you will need 20.4 of them for an hour of construction with mahogany, or 12.3 of them for an hour of construction with oak.

Based on these values, experience and cost per hour for each of the four methods can be determined. These rates necessarily include the time needed to get the SC hammers for the efficiency analysis to be correct. The rates are as follows:

Again, these rates are not necessarily correct for every person. They are only approximate values assigned for the purpose of doing calculations. Some people are very slow at training, and some people are very fast. Also, prices change every day.

But based on the stated rates of the above four methods, an efficiency analysis can be performed. This is a mathematical way to find out what method is best for you, based on how valuable you consider your time to be (per hour). This is sometimes interpreted as the most cash you can make per hour- for example, by runecrafting double nature runes. However, it is ultimately your choice how valuable you feel your time should be. See the efficiency article for more details about this concept.

The results of the efficiency analysis are as follows:


 * Players who value their time at under 1819k per hour should build oak dungeon doors with Sacred Clay hammers.
 * Players who value their time between 1819k and 2246k per hour should build mahogany tables with Sacred Clay hammers.
 * Players who value their time at over 2246k per hour should build mahogany tables without Sacred Clay hammers.
 * Oak doors without Sacred clay hammers are never the most efficient method to train construction.

False Theories
It is often claimed that the fastest construction experience can be reached by using magic stones (for example, building Demonic Thrones) or by using marble blocks (for example, by building Marble walls). Marble does give 500 experience per block and magic stones do give 1000 experience per stone, which is much more than oak planks at 60 experience per item or mahogany planks at 140 experience per item. However, it costs over 650 coins per experience to train with marble blocks and over 975 coins per experience to train with magic stones. It would cost 8.45 billion coins to get 13 million construction experience using marble blocks, and 12.68 billion with magic stones. This is simply not feasible. Additionally, it is difficult to buy marble blocks and magic stones on the Grand Exchange, making buying them from the Stonemason in Keldagrim virtually a necessity; however, this takes time and would cancel out much of the higher experience rate these items would give. It has not been demonstrated that anyone has gotten a significant amount of construction experience by using these supplies.

Trivia

 * Building mahogany tables gives one of the fastest experience rates in RuneScape.
 * When Construction was first released, it was rumoured that some of the first players to get 99 Construction trained by building Skeleton Guards. This method costed nearly 3 billion coins to get 99 Construction, but used only cash.
 * Oak planks were worth 1,000-1,500 coins each on the first few days the Construction skill was released (prior to the Grand Exchange, trade limits, and market price).