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epoxy glue and spalded Maple3/18
Does anyone have any suggestions to prevent the excess glue from penetrating the wood and causing a discoloration when finishing? We're using epoxy (T88) on spalded maple leg joints on a chair.
Why are you committed to epoxy?
There are all sorts of strategies to keeping glue joints clean, most including tape or wax, or even prefinishing.
Not so sure I'd use "spalded" maple for chair legs!
Spalting is the work of the white rot fungus. As a result, the strength of the wood, especially impact strength, is quite a bit below normal. I agree with Larry that this spalted wood is really not appropriate for chair legs.
The problem of squeeze out is common with all adhesives, not just epoxy. Some people will scrape off the excess immediately before it can harden and penetrate. Others will oversize and then remove the affected wood by sanding prior to finishing. It is risky to glue without squeeze out as you may have inadequate adhesive and therefore a weak joint.