motor board

[Roy Eikamp]

Drilled over sized holes, filled with epoxy then redrilled to final final clearance size. drilling shattered epoxy. now what? fill with delrin, aluminum, epoxy with filler ? or what? should not have drilled oversized. please help.

thankyou Roy Eikamp

[hsbob]

get a metal tub and use 5300 and some tape. when harden clean up the excess 5300 with a blade.

[XstreamVking]

Start over, and use a less hard and brittle epoxy.....

[OFFSHORE GINGER]

X-2 that , and did you use Cab-o-sil with that witches brew for a thickening agent to make a putty to fill the holes at hand ?

[Roy Eikamp]

what is 5300? is this resin? should the tape be saturated then rolled up to fit the inside diameter?

thanks Roy Eikamp

[XstreamVking]

5300 is a caulk I believe.

[Roy Eikamp]

I used 150 thick epoxy without any filler material. Epoxy has more of a learning curve than I thought. thankyou for all your responces.

[XstreamVking]

An epoxy resin with cab-o-sil added to thicken it will make a good strong filler for the job. Also use a slightly dull drill bit next time. Bit may be cutting too aggressively, causing the filler to shatter.

[OFFSHORE GINGER]

Roy , making a putty from Cab o sil and resin is pretty common which can be used to fill in small holes , gaps , voids , and often used for for fillets which is a coved shaped application of thickened Epoxy that bridges an inside corner joint , etc , etc.

[groundloop]

Pure epoxy is not good for that (as you found out). What I've found to work well is an approximately 50/50 mix of cabosil with milled fiber, add it to epoxy until it reaches a nice gooey consistency. The milled fiber will add a significant amount of strength and the cabosil thickens the mixture and keeps it from running.