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Re-sawing segmented rings.

Posts

Re-sawing segmented rings.

#1

Re-sawing segmented rings.

john lucas

It's been a while since I needed to do that. I cut a ring this morning on the bandsaw after building a tall fence. Just slid it through the blade. Scared me. I could see where it would easily grab and spin the ring. I glued the 2 pieces back together to get a cross joint glue line. After it's dry I'm going to hot glue it to a backer board to cut the next slice off. That has to me far safer. Anyone else have a better idea. I thought either hot glue or double stick tape.

What I'm making is a very thin ring. The end grain to end grain glue joints are too weak, so I'm slicing off a section of ring. Gluing it back on so the joints overlap. Then I'll slice off another ring and turn the one I just glue on very thin. The 3rd ring will also go on with glue joints overlapping. Then I'll turn it down fairly thin. Then I'll part the stacked rings off and true up the backside and I should have a stack laminated thin ring that hopefully will be strong enough to take some abuse.

Re: Re-sawing segmented rings.

#2

vacuum

Dick Coers

I use vacuum to hold thin objects against a fixture fence on the table saw. It has a double wall plenum, with holes lining up with the part. I have a little tab on the back to aid with the effort to push it through the blade. For this jewelry sized work, I just use my shop vac, but for heavier force, I'd use the vacuum pump.

Re: Re-sawing segmented rings.

#3

Re: vacuum

john lucas

Interesting. Do you think it would hold a ring 1" wide by 6" in diameter. Doesn't seem like there would be enough surface area. The bandsaw creates quite a bit or rotary force as in enters and leaves the cut.

Re: Re-sawing segmented rings.

#4

Re: Re-sawing segmented rings.

John K Jordan

My first thought was also vacuum, maybe seating the ring into a groove in the plate with a number of holes.

Then I wondered: maybe glue it to a board with regular wood glue instead of hot glue and just cut into the board if necessary for the last slice?

JKJ

Re: Re-sawing segmented rings.

#5

With a vacuum pump

Dick Coers

With a vacuum pump I would be pretty confident. Maybe have a v fence under it to support at the start and end of the cut.

Re: Re-sawing segmented rings.

#6

Re: Re-sawing segmented rings.

ihmserv

john,

I use a tablesaw tenon jig the miter slots on my table saw and band saw are the same width.

vertical plate on mine is about 8x8, I hot glue the ring onto the plate then I can run it thru the saw safely.

with a well tuned band saw I have cut rings as thin as 3/16 then run them thru the surface sander to take out any saw marks.

if you are doing larger rings attach a piece of mdf to the tenon jig for what ever size you need.

IAN

Re: Re-sawing segmented rings.

#7

Great idea.

john lucas

I have both a factory tenon jig and a home made one I built many years ago. The homemade one has a much higher fence and would handle most of the rings I do. The Home made one doesn't get used much any more so it could easily be modified if needed.

Re: Re-sawing segmented rings.

#8

Re: Great idea.

Gary clarke

When I want a narrow ring I glue the ring on my project and use a parting tool to split the ring in half and turn to the size needed. It might take several rings to achieve enough to get the final result. I can unusually get 3 rings from a 1 inch thick ring.

Re: Re-sawing segmented rings.

#9

Re: Great idea.

Steve Carey

I made a home made jig with a tall fence that slid in the miter slot on the right side of the band saw blade. Hot glue the ring in three or four places and it works great. The hot glue is an easy clean up.