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How much gap for glue for these joints....?
I am curious how much gap to leave for these joints, which would entail
possibly not gluing certain faces of the joints, and building for loose dry fit-ups. Sometimes I had control over gaps, some times not. I did not have any undersized, non-nominal tools. I was not prepared for the added space of the glue. I glued ALL applicable surfaces I wanted w/ a small paint brush. How much gap in thou, or 1/32" or whatever should be designed into this type of work? The finished pre-glue -up work would look like scrap to ME w/o knowledge of this. I am very picky about final dimensions. some of the joints I have made recently which needed glue: 1)drawer lock joint w/ 3/4" face, 1/2" side birch (not Baltic) - (for drawer) -TS and router table. 1/4" straight bit. Sanded quite a bit. Chamfered the corners w/ block. I dry fitted tightly. Thats what I wanted. Then came glue up. Worked out but I needed all my clamping power. Where did the glue go Phew.? 2)dado joint w/ 1/2" back, 1/2" side birch (not Baltic) - (for drawer) -router table. 1/2" straight bit. There is like .025" or .030" between these two, so glue up was fine. When I made it I had serious reservations about using the joint! newbie 3)rabbet and dado (free-standing support pillars for sliding doors) -router table. 1/4" straight bit. 1"x3" select pine. Dry fit was just right. Mallet time. No gap left anywhere (for glue)! Glued everything!. What a bummer. Amazed I didn't break anymore cast iron clamps! Had to sand to get the final thickness back. 4)butt (free-standing support pillar for door hinge side) - no problems except run-out. Don't know what thickness it added. Seems like a lot. Disaster in another placement. 5)rabbet and dado (top door jambs) - actually the sides slide on screws and shimmed from behind, I can slide tops out w/ sides screwed in place, and they are jointed to be exactly 30" and 24", but I don't think I'll use any glue. Not much of any gap. More now. Nothing visible. Paintable. What do you think - expansion!? BTW, I'm now curious about sliding dovetail front joint effect on strengthening box for future reference. How do these glue up as far as strength goes? So I could cover slides on sides. I guess false fronts for any face frame applications too. ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
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