| Trimming veneer [message #29912] |
Tue, 11 September 2007 08:29  |
colinhester
Messages: 1349
Registered: May 2009
Location: NE Arkansas
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Illuminati (3rd Degree) |
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About to do a large box in teak veneer. In the past I've laid the veneered box face down on MDF and trimmed with a very sharp knife. Seems to work well, but very time consuming. I've also used an edge band trimmer, but always get tear-out going in and coming out, even with a new blade. Also, I've used a laminate trimmer bit designed for the roto-zip - the bit looks like a cylinder with a square notch. Again, not much luck as it tended to score the edge beyond repair. Any ideas?......C
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| Re: Trimming veneer [message #29913 is a reply to message #29912] |
Tue, 11 September 2007 16:56  |
Bob Brines
Messages: 186
Registered: May 2009
Location: Hot Springs Village, AR
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Master |
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1. (this is what I do) Use a new, repeat, new blade in a utility knife. Cutting with the grain is almost automatic. Be careful across the grain. Saw with the blade rather that force it through in a single pass or you will crush the edge and cause tear-outs. Don't try to get flush with the knife. Leave 1/32" or so for sanding. Sand the edge down flush applying pressure only on the stroke into the box. Sanding out from the edge will cause tear-outs. To avoid cutting into the previous panel, you might lay a thin metal rule against the bottom of the veneer being cut and cut to this edge. That will give some support and make the cut a shearing action rather than a crushing action. 2. Use a down-cut spiral bit in a router. The best bit is 1/2" diameter pattern following bit. I tried a 1/4" bit, which worked OK, but the bearing failed. It was not a ball bearing. I believe that the 1/2" bits do have ball bearings. Bob
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| Re: Downshear flush trim bit [message #61934 is a reply to message #29915] |
Wed, 24 February 2010 22:03 |
DaBase
Messages: 47
Registered: February 2010
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Baron |
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Thank god I found this post because I have been going nuts trying to cut the veneer on my new box. No matter what I do I always seem to tear it or it doesn't look right. So, I'm going to try one of the tips on here and let you know how it goes.
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