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Sunday, 18th April 2021
12:07:08 pm

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When driving nails in hardwood you may experience the misfortune of having a large crack appear, or even a piece of your timber break out at an edge. In addition any nail driven in hardwood will set due to high friction caused by the wood cells around the driven nail (similar to the build-up up of friction when you drive a pile in the subsoil). The resistance of the nail shank to withdrawal for a piece of hardwood is therefore very high and needs a lot of force to take out. So, you may wonder what will happen if nails are used to connect prefabricated hardwood parts which need to be taken out during the dismantling process:           

    Driven-nail-1 This will happen: And that is the main reason that we do not use any nail in our hardwood prefab structures. Ther are a few solutions to solev cracking, however, these are time consuming, expensive and do not guarantee an undamaged connection.

 Remedies may be:

 Dot-1 Dip the the nail in petroleum jelly (*), which reduces the friction of the driving process, and can decrease the probability of the wood splitting.
(*) Some wood species will show ugly black stains after an application with petroleum.

 Dot-1 Pre-drill a hole slightly smaller than the nail's shaft diameter. This will reduce the pressure of the nail penetration and shafty friction without decreasing the nail's grip on the wood.

 Dot-1 Use the smallest diameter nail which will do the job, however, this can only be done when these ugly steel connector plates will be used and tens of nails be driven thru the plate holes.
 Dot-1 Blunt the point of the nail with the hammer. This is done by placing the nail on a hard surface with the point facing up, and tapping the sharp end with a hammer. The nail will then cut its way through the wood grain, rather than wedging a pathway. Though this puts all the material displacement along a single plain, rather than dispersing it all around the point of the nail.
 Dot-1 Where end nailing is necessary, angle the nail so that it can be started farther away from the end, but the nail will still get a bite into the other wood part it is being nailed to.
 Dot-1 Back any nail out if a crack begins to appear while driving it. A tiny crack is a sure indication the wood will split if you continue. 

After having read the above you will certainly agree with us that it is a much better method not to use nails, but pre-drilled screws or treads as to avoid that cracks occur or parts will split or break off, which is so often the case when nails in hardwood are used.   

Reviews from Bali Prefab World

"Dear Prefabworld Bali International. Our container arrived a few weeks ago and we have meanwhile re-assembled the structure without any problem. All parts fitted perfectly. The instructions on the re-assembly manual with the 3-D sketches were amazingly precise. The wood is beautiful and everybody loves the fantastic carvings. No cracks no warping anywhere to be seen. The next project will be yours".
Review from: Gary Peton, Maui, Hawaii
Project: Veranda + round access steps and 3-D carved railing system for Maui, Hawaii ,
Date: 28-06-2010.
Rating: 4,5 out of 5.

Read more testimonials from Prefabworld Bali International: click here
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