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2. Transfer molding - Wikipedia

   en.wikipedia.org/wiki/Transfer_molding

   This may be obvious, but it is a main contributor. Things to be done to limit these molds include pressing the resin in at a high pressure, keeping the fiber distribution uniform, and using a high quality properly degassed base resin. Sharp corners. Figure 3: Sharp corner generates voids in transfer molding

3. Wood finishing - Wikipedia

   en.wikipedia.org/wiki/Wood_finishing

   Successful filling of voids in wood requires the filler to precisely match the colour and grain pattern of the wood around the void, which is difficult to achieve in practice. Furthermore, filled voids do not behave like wood during subsequent finishing steps, and they age differently to wood. Hence, repairs to wood using fillers may noticeable ...

4. Void (composites) - Wikipedia

   en.wikipedia.org/wiki/Void_(composites)

   Void content in composites is represented as a ratio, also called void ratio, where the volume of voids, solid material, and bulk volume are taken into account.Void ratio can be calculated by the formula below where e is the void ratio of the composite, V v is the volume of the voids, and V t is the volume of the bulk material.

5. Wood putty - Wikipedia

   en.wikipedia.org/wiki/Wood_putty

   Wood putty, also called plastic wood, is a substance used to fill imperfections, such as nail holes, in wood prior to finishing. It is often composed of wood dust combined with a binder that dries and a diluent (thinner), and, sometimes, pigment .

6. Wood glue - Wikipedia

   en.wikipedia.org/wiki/Wood_glue

   Epoxy resin, usually as a two-part mix system, cures under a wider range of temperatures and moisture content than other glues, does not require pressure while curing, and has good gap-filling properties: near-perfect joints with very small gaps actually produce weaker bonds. Use of epoxy requires careful attention to the mixing ratio of the ...

7. Fiber volume ratio - Wikipedia

   en.wikipedia.org/wiki/Fiber_volume_ratio

   Porosity or void fraction is a measure of the void (i.e., "empty") spaces in a material, and is a fraction of the volume of voids over the total volume, between 0 and 1, or as a percentage between 0 and 100%. There are many ways to determine if a composite part contains voids, such as industrial CT scanning or ultrasound. If the volume fraction ...