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First Alignment Dowel Fitting


Ian J.

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So the first dowel fitting didn't quite work well enough. I used small blobs of epoxy to try and hold the back sides of the dowel parts to the recess in the plywood end, but its hold on the metal is just to fragile. The parts moved and the end result is a 1mm error. I can use sheets of paper built up in layers to raise track on the 'lower' side for this join, but I need to have a different glue of some kind to hold the dowel parts properly for future joins. I'm now thinking of Original Gorilla Glue as that has a filling nature, though it needs moisture to activate. Alternatively, I'm wondering if 'No More Nails' could be put in and the dowel part pressed into it, filling the area around such that it stops any up/down/left/right movement, even if it doesn't grip the metal of the dowel properly. I will need to experiment.

 

Forstner bit and drilled recesses in board 5:

P1002122.JPG.d4aeb984d4b8235b51d94a5c17023411.JPG

 

Dowel parts in board 9:

P1002123.JPG.989944418e506c6da7847bffedbac9ae.JPG

 

Two boards together, held with clamp:

P1002124.JPG.a591ccaefa14afac70579e8153c75b4d.JPG

 

'Top' of boards in position:

P1002125.JPG.1f3e8350029c020dff9d6de6899a8d97.JPG

 

Side of boards, showing alignment smooth with no error while exposy glue is hardening:

P1002126.JPG.050c292a914dc2732fae9987ba518fbe.JPG

 

Side of boards with dowels screwed into place, showing boards out of alignment (slight offset of camera):

P1002128.JPG.bb76eaaa0030ba9a629a14449f64dbc8.JPG

 

Side of boards with dowels screwed into place, showing boards out of alignment (camera exactly positioned for top surface):

P1002129.JPG.7ae9b6e516f709c6209d60dcf43938ae.JPG

 

:resent:

 

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Ian - I've also found dowels difficult to effectively 'retro fit'  to baseboard joints. To get round the difficulty, I devised a method to secure the alignment by using forstner bit cut holes in one of the mating faces and plywood disks cut to fit the holes.  The two faces can then be clamped together to get the true alignment and the disks pressed through the holes in the one face onto the other face and glued in place.  The photo below shows one such joint (the disks/holes are ringed).  I've dissambled/re-assembled it several times and it seems to go back true.  I was going to post a description on my "Swan Hill" blog as it may be a method that's of wider interest but since you've described the problem, I mention it here instead!  

 

disk joint.jpg

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