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attaching sidewall after profiling

Posted: Fri Jul 20, 2012 7:01 pm
by olie25
so like many i have had way to many stressful moments ripping sidewall off core because i tried to profile them all in one go. I use a CNC router to do my profiling and now im doing blocks of sidewall, ripping and attaching what im wondering what people are preferring, staples in the layup or double sided tape? i have done lots of searches cant find good info on this, if its there i apologize but this forum is getting a tad cluttered. if you like tape, what kind are you using and why? if you like staples what size are you using? also how do you rabbet at this point because i cant imagine tape would hold them on good enough to run a bit and i dont think my bits would like staples very much ;) , so do you just change the profile to factor the rabbet in so its essentially done once you attach

Posted: Sat Jul 21, 2012 11:42 am
by hugocacola
staples on the bottom

Posted: Tue Jul 24, 2012 1:35 am
by falls
I would change your profile to allow for the rabbet before ripping and attaching especially if you have the CNC. With the CNC you would want the same top profile as the core just 0.8mm (or whatever rabbet you want) deeper into the material
If you are using a planer/router bridge you can sit the sidewall material on a layer of material as thick as you want the rabbet to be and then just plane/rout as if it were the core. When you take it off the thin material your rabbet is there and the top profile of the sidewall is the same as the top profile of your core.
If you just plane/rout the rabbet off the top as an extra 0.8mm pass you end up with the top profile different to the top profile of your core. Not perfect, but whether it would be good enough I'm not really sure.

Posted: Thu Jul 26, 2012 4:21 am
by knightsofnii
our sidewalls are profiled a few thousandths thinner than cores.
Tack glued on nowadays by flipping core and sidewalls upside down, using a bunch of clamps so its all flush to table and butted together, then use medium viscosity CA with activator to tack together.

Havent found staples that are ductile yet strong enough to use in this application, too much springback on the bamboo sidewalls!!

Posted: Thu Jul 26, 2012 8:18 pm
by falls
You just take the sidewalls down a few more thousandths on the planer Doug? Or you have a CNC and drop the same top profile down a few more thousandths into the sidewall material?