Using West System epoxy to fill deep voids

[Stephen Cherry]

One thing I have tried is to add a little white pigment in to a sawdust epoxy mixture. As noted above, the epoxy darkens up pretty quick, and the white lets you modulate it.

Of course, all of this will take some experimentation.

[Bob Michaels]

West System advises to "wet out" the cavity with un-thickened epoxy just before putting in the thickened epoxy. Thickened in this sense means the epoxy mixed with sawdust or other thickeners. I've used this method many times and it seems to make sense and do a good job.