cross grain routing of plywood - Router Forums
 
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post #1 of 5 (permalink) Old 09-03-2011, 10:33 AM Thread Starter
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Default cross grain routing of plywood

I'm seeking the best technique to rout a 3/8 rabbet in 3/4 inch 4x8 birch ply, cross grain to lay boards end to end. Test runs consistently splinter. I use a Bosch 1613 EVS plunge router.
Thanks for any tips
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post #2 of 5 (permalink) Old 09-04-2011, 05:31 AM
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A down spiral carbide bit will make a big difference. It needs to be very sharp for best results. Sometimes a layer of painters tape over the area to be cut will help to hold down the edge grain as it's cut. Slightly dampening the surface veneer in the area to be cut also helps. When all else fails, scoring the cut lines down through the veneer with a very sharp knife before removing any material with the router will help. One or a combination of these should solve your problem. I usually try them in the order posted until I get the results that I need.

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post #3 of 5 (permalink) Old 09-04-2011, 08:10 AM
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Bonzo,

A shallow first pass helps sometimes, and I have to second the masking tape suggestion

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post #4 of 5 (permalink) Old 09-04-2011, 09:26 AM
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Hi

Here's a router bit made just that type of job..

Compression Up/Down Spiral Router Bit

MLCS solid carbide router bits


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post #5 of 5 (permalink) Old 09-04-2011, 05:34 PM Thread Starter
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Many thanks Charley - will run some test strip. Sounds good.
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