MAS Epoxies Wood Flour, 1 Qt, 25-020
MAS Epoxies Wood Flour is finely cut sawdust used to thicken epoxy and make excellent glues for bonding, structural fillets and filling gaps on wood.
Wood flour readily absorbs epoxy which helps make a stiff and strong paste. Wood flour's dark brown color also looks nice in a wooden boat and wood projects.
When making fillets, adding some Phenolic Micro Balloons or Colloidal Silica (no more than 30 percent by volume) has the added benefit of making wood flour fillets smoother and easier to spread.
Features & Benefits:
- Thickening epoxy
- Making epoxy glues for filleting, filling and structural bonding wood structures
- Brown in color
- Available in quarts and half gallons
How To Make Professional Fillets and Fairings:
- 1 Part MAS Resin/Hardener mix using "Medium" hardener (or 50/50 MAS "Slow/Fast" Hardener)
- 1 Part Colloidal Silica
- 2-3 Parts Wood Flour
It is important to mix epoxy and hardener thoroughly before adding thickener.
Often two fillers used in conjunction are more effective than any single filler used alone; this can be attributed to the synergistic effects found when two different particle sizes are blended together.
When filling gaps or making a fillet (pronounced "fill-its") add sufficient wood flour to make a peanut butter consistency.
Colloidal Silica (AKA Cab-O-Sil) and other white fillers may be added to make the wood flour paste match the color of the plywood exactly. Adding some Phenolic Micro Balloons or Colloidal Silica (no more than 30 percent by volume) has the added benefit of making wood flour fillets smoother and easier to spread.
When using epoxy as an adhesive (i.e., bonding wood to wood), add enough silica powder to the resin-hardener mix to bring it to the consistency of mayonnaise or jam.
When simply coating, sealing or saturating wood with epoxy, do not add thickening powders.