I spent 6 hours Saturday and 7 hours yesterday fiddling with my no-name 3 piece raised panel set to make two panels. I re-made 2 sets of stiles while trying to get rid of the gap between stiles and rails that was visible on the face. I learned a lot but ended up ripping a few thousandths off of the rails to get the rail-to-stile fit acceptable.
I discovered that the face cutter took a deeper cut than was possible with the cope cutter. I did manage to come up with a process for making the cope cuts without tearout so the effort was not entirely fruitless.
If I took less cut on the face then the coped stile cut would fit tight to the rails, eliminating the gap, but the fit was a little bit loose.
Question 1...Should I simply accept a slight gap on the joint between stile and rail at the surface (maybe 4-6 thousandths) so that I have a tight glue surface in the interior of the joint, or opt to make a shallower cut on the faces so that the visible joint line is seamless? I don't believe that the bits are machined to a tolerance that will allow me to correct the problem with shims...this is a 50 dollar 3 piece set.
My bigger beef is with the 3 1/4 inch diameter ogee raised panel cutter (with undercut) . The panel was 14 x 17 inches, 7/8 thick red oak. I had to make each cut in 5 passes. The feed rate had to be kept VERY slow to prevent bogging down the router and the resultant cut had a lot of "strings" of fiber attached, which leads me to think the bit is just not sharp. I had to clean the edges with a sharp chisel and sandpaper every pass. Playing with speed did NOT seem to make an improvement...I'd estimate I ranged speed from 8000 - 12000 rpm without seeing any improvement in performance.
I will need to cut 7 more raised panels to finish my current project. Given the time spent I am leaning heavily toward purchasing a 3 piece set from a reputable manufacturer. When I started using a router I went through similar problems using the cheap bits from the BORG. I started buying Freud bits and the problem has gone away. I have also noticed the Freud bits cut a lot more linear feet of wood before dulling.
Question 2...If I buy a name brand (Whiteside, Freud, etc) raised panel bit will I be able to make the panel in fewer passes without this loose fiber problem? Ideally, a 2 pass setup would be great but I could live with three so long as I don't have to clean edges every pass.
Chuck
I discovered that the face cutter took a deeper cut than was possible with the cope cutter. I did manage to come up with a process for making the cope cuts without tearout so the effort was not entirely fruitless.
If I took less cut on the face then the coped stile cut would fit tight to the rails, eliminating the gap, but the fit was a little bit loose.
Question 1...Should I simply accept a slight gap on the joint between stile and rail at the surface (maybe 4-6 thousandths) so that I have a tight glue surface in the interior of the joint, or opt to make a shallower cut on the faces so that the visible joint line is seamless? I don't believe that the bits are machined to a tolerance that will allow me to correct the problem with shims...this is a 50 dollar 3 piece set.
My bigger beef is with the 3 1/4 inch diameter ogee raised panel cutter (with undercut) . The panel was 14 x 17 inches, 7/8 thick red oak. I had to make each cut in 5 passes. The feed rate had to be kept VERY slow to prevent bogging down the router and the resultant cut had a lot of "strings" of fiber attached, which leads me to think the bit is just not sharp. I had to clean the edges with a sharp chisel and sandpaper every pass. Playing with speed did NOT seem to make an improvement...I'd estimate I ranged speed from 8000 - 12000 rpm without seeing any improvement in performance.
I will need to cut 7 more raised panels to finish my current project. Given the time spent I am leaning heavily toward purchasing a 3 piece set from a reputable manufacturer. When I started using a router I went through similar problems using the cheap bits from the BORG. I started buying Freud bits and the problem has gone away. I have also noticed the Freud bits cut a lot more linear feet of wood before dulling.
Question 2...If I buy a name brand (Whiteside, Freud, etc) raised panel bit will I be able to make the panel in fewer passes without this loose fiber problem? Ideally, a 2 pass setup would be great but I could live with three so long as I don't have to clean edges every pass.
Chuck