New joining jig and straight edge

DavidA · Mar 26, 2013

After thinking about building a joining jig, I came up with a good design. The nice thing about this jig is that it allows flexibility. The other cool thing is that I can use it as a straight edge for routing the back strip.

A spacer allows the cams to be locked in position, yet move freely to lock or unlock. I used slick tape on the table and hold-down clamp. None of the glues I tried stick to it.

gspears · Mar 26, 2013

Very nice looking Jig! Well done.

Michael Smith · Mar 26, 2013

I like looking at a beautifully made jig almost as much as finely built ukulele. Nice work.

DavidA · Mar 26, 2013

manual agealthc

Thanks guys! My lady friend calls the cams "those spermatozoa looking things!" That brought me right back down to earth.

ChaosToo · Mar 26, 2013

That's a bit of genius right there! I love reading these threads and seeing 'inventions' like this! This place really is a gold mine for all manner of brilliant stuff and makes for fascinating reading, whether you're a builder or not!

Well done and thanks for sharing

Rick Turner · Mar 26, 2013

You might want to check out the totally fixtureless system of using brown heavy duty masking tape (the kind LMI sells for binding) as both a hinge and for clamping tension. The nice thing is that you can center join one or dozens of backs and tops in one session with no need for tooling. I've had twenty tops and twenty backs all glued up at once. And totally irregularly shaped pieces are no big deal.

Piedmont Uke · Mar 26, 2013

Hi Rick,
Would you mind sharing a few tips on that procedure? For instance, do you just use tape across one side as in a reverse tent or do you tape the seam on the other side also. Do you weight the center or clamp a bar on the center?
Ken

BTW, nice gadget there DavidA...

Timbuck · Mar 26, 2013

Nice Jig..a bit like Chucks Jig...only neater

ksquine · Mar 26, 2013

Now THAT is a slick fixture!! Its simple enough to assemble with basic skills and tools and then get great performance. I think its time for me to upgrade my plate gluing equipment

Chris_H · Mar 26, 2013

tape works great.. anchor on one plate, pull taught and anchor the other end. For a uke sized plate, 3 courses of tape are fine (on each side), one at the top, middle, bottom, not exactly at the ends, but where it feels right. Carefully flip by sliding to the edge of the worksurface, not letting the plates hinge open. Repeat process on the back side. No need for a joining jig.

Chris_H · Mar 26, 2013

and I am not sure you need the heavy duty binding tape. I have used blue tape, green tape, probably white tape somewhere in the past when there was no other tape around. The joint should be tight fit when dry, so little pressure is actually needed.

DavidA · Mar 27, 2013

Fixtureless System

Rick Turner said:
You might want to check out the totally fixtureless system of using brown heavy duty masking tape (the kind LMI sells for binding) as both a hinge and for clamping tension. The nice thing is that you can center join one or dozens of backs and tops in one session with no need for tooling. I've had twenty tops and twenty backs all glued up at once. And totally irregularly shaped pieces are no big deal.

I think you are absolutely right. My mind went right for the fixture. Though I did have a lot of fun!

Dominator · Mar 27, 2013

I love a good jig. Nice job.

Rick Turner · Mar 27, 2013

I like a good slip jig. Accents on the 5 and 9...

tobinsuke · Mar 27, 2013

Rick Turner said:
I like a good slip jig. Accents on the 5 and 9...

Now THAT's clever.

New joining jig and straight edge

DavidA

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