Difference between revisions of "Wood products"
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==MDF== | ==MDF== | ||
| + | MDF is basically a mixture of fine wood fibers and a binder that's pressed into plywood-like sheets. Since MDF has no "grain", it's very stable. The sheets are flat and will stay that way. And with carbide-tipped bits and blades, it machines smoothly and easily. Topping it all off, MDF is relatively inexpensive. | ||
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| + | When working with MDF, there are a few tricks you should know to get the best results. When gluing, you'll find the edges rougher and more porous than the face. Gluing as you normally would can "starve" the joint of glue. To avoid this, "double glue" the joint. The first layer soaks in and helps seal the surface, while the second application works to create a solid bond. | ||
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| + | Screws will also require special methods. Screws installed into the edges of MDF can cause it to split, resulting in a weak or failed joint. You'll need to drill a pilot hole for your screws. Use a drill bit the same diameter as the shank of your screw, and drill your hole slightly deeper than the length of your screw. Secondly, use sraight-shanked screws to avoid splitting the material and also to get a better grip in the material. Special screws, called Confirmat screws, are available but somewhat costly. | ||
==OSB== | ==OSB== | ||
Revision as of 13:59, 26 February 2006
Contents
Plywood
MDF
MDF is basically a mixture of fine wood fibers and a binder that's pressed into plywood-like sheets. Since MDF has no "grain", it's very stable. The sheets are flat and will stay that way. And with carbide-tipped bits and blades, it machines smoothly and easily. Topping it all off, MDF is relatively inexpensive.
When working with MDF, there are a few tricks you should know to get the best results. When gluing, you'll find the edges rougher and more porous than the face. Gluing as you normally would can "starve" the joint of glue. To avoid this, "double glue" the joint. The first layer soaks in and helps seal the surface, while the second application works to create a solid bond.
Screws will also require special methods. Screws installed into the edges of MDF can cause it to split, resulting in a weak or failed joint. You'll need to drill a pilot hole for your screws. Use a drill bit the same diameter as the shank of your screw, and drill your hole slightly deeper than the length of your screw. Secondly, use sraight-shanked screws to avoid splitting the material and also to get a better grip in the material. Special screws, called Confirmat screws, are available but somewhat costly.
