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spiral vs. straight bits

34K views 42 replies 26 participants last post by  Cherryville Chuck 
#1 ·
Hey folks, I am about ready for the Oak Park box jig, Will I get better results from spiral over straight bits for my cuts? My set now a 1/2" shank mlcs set. Thanks to everyone for their in-put about the O.P. jig Mike:unsure:
 
#41 ·
I usually aim for a perfect fit without levelers and I'm not familiar with the levelers on that plate but if I were doing it my way I would turn the router upside down and put a piece of the wood on top of the router with the insert plate and adjust the bit until it was almost flush then make the first cut and test the fit. Then make additional cuts as necessary.
 
#42 ·
With a Formica to to the table, that method may cause a lot of tarout on the surface. I am going in from the top, by cutting the corners with a Foreste bit, then jigsaw almost to the edge and finish with the router, hopefully wth a clean edge to the Formica.

With the levelers, the table is cut right through and corner sections fotted with mounting scrrews to level the plate. https://www.kregtool.com/store/c41/...precision-router-table-insert-plate-levelers/

Malcolm
 
#43 ·
Those levelers would certainly make for an easier installation. Just about worth the $25 Canadian it would cost me. I've cut countertop laminate with several different bits and as long as it is glued firmly to the substrate and you use a carbide bit you shouldn't have tearout.
 
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