lapoza
07-19-2011, 09:09 PM
Hello all,
I'm new here, my dad has a shop bot with the router type cutter, not the spindle. Im making finger joint speaker enclosures using his machine and am wondering what the best bits/speed settings to use for cutting 3/4 birch plywood. I currently have and upcut 1/4 inch bit, and a downcut 1/4 bit that i bought from centurion tools. I run both bits at 12k rpm using the downcut for the first pass at .2 depth to cut clean lines in the plywood, then i come back in in three passes with the upcut bit at .25 a pass with the last pass cutting all the way through the wood leaving tabs.
I am running this at 1.5 ips. I have gotten the cut time down to around an hour for what I am trying to do. But my dad seems to think if I buy the right bits at the right RPM and speed I can do this in one or two passes in half the time. I'm wondering it a 3/8 bit in one pass and then coming back and using a 1/4 to clean up.
The reason I use the downcut on first pass currently is the up cut bit was not cutting sharp edges and actually was pulling the veneer up on the first pass. This was creating a lot of sanding to get rid of the burrs after. The downcut took care of this.
Anyhow any help is appreciatted, plan on building a lot of these so I appreciatte any help from the experts out there.
J
I'm new here, my dad has a shop bot with the router type cutter, not the spindle. Im making finger joint speaker enclosures using his machine and am wondering what the best bits/speed settings to use for cutting 3/4 birch plywood. I currently have and upcut 1/4 inch bit, and a downcut 1/4 bit that i bought from centurion tools. I run both bits at 12k rpm using the downcut for the first pass at .2 depth to cut clean lines in the plywood, then i come back in in three passes with the upcut bit at .25 a pass with the last pass cutting all the way through the wood leaving tabs.
I am running this at 1.5 ips. I have gotten the cut time down to around an hour for what I am trying to do. But my dad seems to think if I buy the right bits at the right RPM and speed I can do this in one or two passes in half the time. I'm wondering it a 3/8 bit in one pass and then coming back and using a 1/4 to clean up.
The reason I use the downcut on first pass currently is the up cut bit was not cutting sharp edges and actually was pulling the veneer up on the first pass. This was creating a lot of sanding to get rid of the burrs after. The downcut took care of this.
Anyhow any help is appreciatted, plan on building a lot of these so I appreciatte any help from the experts out there.
J