Bandsawing sympathetic (?) curves ????

Re: Bandsawing sympathetic (?) curves  ????

Sam Force

Let me just say that I am sceptical. In theory yes, but in life I say not gonna work

Gimmicky

Needs a few butterflies

Re: Bandsawing sympathetic (?) curves  ????

Dick Coers

Wouldn't the curve be off by the width of the kerf? I made some clipboards decades ago by sawing curves like that and put a contrasting strip of wood the width of the kerf. But may not have her technique figured out correctly. Edit; I watched the video and took a screen shot after she cut the end flush. You can see a gap in the seam quite clearly. That's a fresh cut from a Festool track saw, the cutoff is laying on the table in the foreground.

Re: Bandsawing sympathetic (?) curves  ????

John in NM

If one could get the joint nice and tight, I suppose it would increase the joint area and make for a slightly stronger joint over straight. But given that a well executed straight joint is plenty strong enough, and this one sounds pretty hard to execute tightly, I just don't see the advantage.

Also doesn't sound like its to my taste, so maybe that's part of my skepticism.

agree

Bill Tindall, E.Tn.

the radii will be in error by the blade width. On a large radius curve the error might not result in a large gap. But stepping back, what is the purpose of this joint beyond trendy?

Close E'nuff For Gov'ment Work

Mark Mandell - Gone Round In New Jersey

Such joins were the focal point of my Grandkid's crib. The joint edges in the center-piece were "cleaned" and squared with a spindle sander, then the outer sections were bandsawed to match within a 16th.

Both joint faces were slotted with a router then the joins were filled with loose tenons. Glued up and any gaps were filled with epoxy.

INMHO, for such joints, hairline seams are a useless goal, and the tenons are required for real strength anyway. I used tinted epoxy which accentuated the serpentine lines.

Re: Close E'nuff For Gov'ment Work

Jason Roehl

That’s pretty cool, Mark. I like it!

Jason

Re: Close E'nuff For Gov'ment Work

jessecloud

Works fine for panels. That really looks great.

I've done 'sympathetic edges' with a router, calculating offsets to make up for the different radii. Will sometimes route down to the last 1/8th inch or so and cut the rest of the band saw, then clean up with a flush trim bit. But that's mostly for safety and to avoid awkward router cuts that can easily go wrong.

But as pointed out above, its a lot of work and you need to really like the appearance to make it worth while.

Another version

Clint Searl

Freehand routed the contours and left a gap with black edges for emphasis.

I'm way behind the curve on this.

Re: Close E'nuff For Gov'ment Work

Bill Houghton, Sebastopol, CA

That's lovely work, Mark; but you can't just casually throw in a grandkid reference without a picture of the kid.

Re: Close E'nuff For Gov'ment Work

Mark Mandell - Gone Round In New Jersey

Thanks, Jason

T'was a labor of love.

Ha! Done!

A question Clint...

Barry Irby

Clint, I like that. How old is it? I am wondering how the joints between the wood and the resin is holding up? If it works for this it might work for a river table. I am skeptical.

Re: Close E'nuff For Gov'ment Work

Larry Rupprecht

That picture says "ya done good, Grandpa!"

Beautiful photo of a project filled with love and lots of good feelings for you. Ain't nothing better than that in the whole world!

Maybe . . .

CJ in MPLS

this will be come the new pallet wood/river table phenomena. What do you have against progress?

Sympathetic sawing is a centuries old technique

Dick Coers

I know carpenters used it with hand saws, and I think it was common in the boat construction too. When two boards butted together had a large gap, it was common to use a handsaw and saw down the crack. A little was taken off both boards and then they were tight after the cut.

Re: A question Clint...

Clint Searl

Barry, there's no resin. The gaps are just gaps of about 1/4" .

Ah Ha! Thanks Clint

Re: Bandsawing sympathetic (?) curves  ????

Mark Hennebury

I used to do a lot of complimentary curves; rough cut with a bandsaw, finished with a router, flush cut bit and precision jig. You will not get an "accurate" fit with the bandsaw technique because as mentioned the curves will be off by the kerf of the sawblade.

I made hundreds or these card boxes, some with the stripe, which is made offset so the thickness varies.