Here is an idea showing how to make professional trimming jobs.
You can remove fractions of an inch from: PCBs, Front Panels etc.
Also square things off.
Not everybody has a setup like that.
I do have a CNC machine, but I still keep a sanding block handy for those jobs.
I glue a full sheet of medium-course sandpaper onto a piece of slightly bigger MDF, with PVA.
Leave it flat on the bench, and slide edge of the the circuit board over it.
Leo..
Yes that works good also.
I made the jig using toggle clamps and floor hardboard.
How long do your bits stay sharp?
I use carbide bits in my router.
I am on my second flush cut bit (in three years).
I use this jig for: PCB glass board, acrylic plastic and wood projects.
Oh, so it's not a big issue. I thought you might be going through them like there was no tomorrow, but that sounds reasonable.
Obviously, the more you use it you may have to replace more.
I trim things quite often.
Also, cut my digits now and then when changing/adjusting the bit.
Note to self, wear gloves.
.
I used a metal file on a small PCB that only needed to be reduced by 1-2mm.
For a larger cut would a hacksaw work?
Files work.
For a larger cut would a hacksaw work?
I have used them.
You can can use a scroll saw with a metal blade.
An oscillating sander works well, you can even add a fence.
The problem with sand paper, files and saws is corners are usually rounded.
This is not to much of a problem for a PCB but more so for face plates and wood projects.
A router and a flush cut bit with the toggle jig allows you to cut/trim fractions of an inch up to about 1/4".