adjustable reverse router bridge profiler tool
Moderators: Head Monkey, kelvin, bigKam, skidesmond, chrismp
-
doughboyshredder
- Posts: 1354
- Joined: Mon Sep 17, 2007 7:37 pm
-
doughboyshredder
- Posts: 1354
- Joined: Mon Sep 17, 2007 7:37 pm
Are these a direct mirror of your core?iggyskier wrote:CNC'ed out of 1.25" MDF. Grip tape, hot glue, few other things to keep chatter and snipe from not being an issue.
You do need to be careful, don't want to drop them or anything. But some of our profilers have done 150 pairs of cores with no issues.
I tried to profile a test core with a setup that I threw together in a few minutes, and I couldn't get it to come out right. It seemed like I needed to make the profiler larger then what I wanted my core to be to account for everything flexing.
It might have been the way I had everything set up, I was trying it on a whim because I was waiting on a new router bit. I need to spend a little time and $$ setting up a proper adjustable sled.
Hey doughboy
not sure if you are still on with this core shaping technique?
I have been reading a bit about setting up jigs to use a router as a thicknesser (I think called a planer in the USA). Anyway it is basically the function you are trying to achieve with this reverse router bridge.
I don't have a great solution for holding the core down as yet, but maybe one to speed up your process (maybe you have already thought of this).
All the plans I read for making the router based thicknesser suggested using a core box bit or a dish/bowl cutter bit.
From your initial pictures it looks like you were only using a narrow straight bit. With a bit like the picture above you essentially have maybe 3-4 times the width with each pass. It doesn't matter that the edges are rounded because you always follow past with the flat bottom of the cutter and end up out past the edge of your core.
Anyway just a thought. Basically I am wondering if I can build something router based like what you have made or just a standard bridge for a few hundred dollars or whether I should spend many more hundreds on a decent planer/thicknesser.
not sure if you are still on with this core shaping technique?
I have been reading a bit about setting up jigs to use a router as a thicknesser (I think called a planer in the USA). Anyway it is basically the function you are trying to achieve with this reverse router bridge.
I don't have a great solution for holding the core down as yet, but maybe one to speed up your process (maybe you have already thought of this).
All the plans I read for making the router based thicknesser suggested using a core box bit or a dish/bowl cutter bit.
From your initial pictures it looks like you were only using a narrow straight bit. With a bit like the picture above you essentially have maybe 3-4 times the width with each pass. It doesn't matter that the edges are rounded because you always follow past with the flat bottom of the cutter and end up out past the edge of your core.
Anyway just a thought. Basically I am wondering if I can build something router based like what you have made or just a standard bridge for a few hundred dollars or whether I should spend many more hundreds on a decent planer/thicknesser.
Don't wait up, I'm off to kill Summer....
I think you can do this and get the results you are looking for without a CNC. If you have the time and your thicknesser is accurate enough you can get to +/- 0.05mm.doughboyshredder wrote:Yep, iggy has them cnc'd out of solid piece of mdf and then puts a layer of grip tape on them for passing through the planer.
doh ... variable jig! I decided fairly early on that I did not have the wit or wisdom to create a variable jigs. It's an extension of the first crib I made, but you mark out the profile using a marking gauge and a micrometer. The blank becomes the template for the crib. Its fine tuned using blue 0.15mm and brown 0.07mm tape- I should have taped the template and not the crib. Shout if you want more detail.