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Router template experiment

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Project by rwyoung posted 2024 days ago 2384 views 2 times favorited 2 comments Add to Favorites Watch
Router template experiment
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My day job is electrical engineer. For a number of years I worked as a contract engineer and during that time inhereted a LPKF Protomat circuit board milling machine. These are 3-axis CNC machines intended for high accuracy, fine milling of copper traces on prototype circuit boards. But they can also cut arbitrary shapes. Standard FR-4 is 1/16” thick (other sizes can be had) so by stacking up 4 copies of the same pattern I made a simple 1/4” test pattern. This was used to make the cut-outs in my In-Out box project.

I believe I could have used 3 layers for a total patern of 3/16” but I err’d on the fat side on this one. Pretty simple pattern with just two curves and a straight area.

Worked very well with a 1/2” top bearing flush cutter and walnut.

Pictured is the stack of 1/16” material double face taped to make a 1/4” template, a 1/2” cutter with top bearing and all mounted in my table. The plate is the Harbor Freight knock-off of the Rouseu.

-- Don't sweat the petty things and don't pet the sweaty things.





2 comments so far

View Thos. Angle's profile

Thos. Angle

4435 posts in 2564 days


#1 posted 2024 days ago

I have a lot of these patterns made from 1/2 inch MDF. They work very well. Of course, I can’t design them on the computer. Pattern routing is certainly a great way to duplicate a complicated edge treatment.

-- Thos. Angle, Jordan Valley, Oregon

View rance's profile

rance

4125 posts in 1762 days


#2 posted 1448 days ago

One thing you can do is add a filler board between your template and your work. The filler should be slightly smaller than the template outline. This filler separates the template from your work which gives you more leeway with your bit-height setting. With this, you should be able to use only one layer of 1/16” material for your template too.

-- Backer boards, stop blocks, build oversized, and never buy a hand plane--

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