Today I made myself a new base plate for my mini router. The plan was to only mark the screw holes and drill and submerge them to the screw heads with my drill and the rest I will manage with my K40. As always, I do some tests before I get started on the topic itself. I thought it’s a bit annoying that I have to use 2 machines to do the task, so I tried something completely new - for me - Offset-Fill!
At 1000mm / min and 4 mA and with 170 LPI, the Acrylic is “powdered” and I get the finest cylindrical cavities for my bolt heads. (3-5 laps, all depending on the desired depth) Of course I could now also cut the holes for the thread itself. At the same time I used the cut-out hole from the front as a template for the back, here I also had to make two recesses to be able to operate the router from the top when it is integrated in my work table. I am very happy with the result and fascinated by the options I have with my little K40 / Mini-Gerbil and of course LigthBurn - love it!
The only thing that could be missing is, with offset fill, the laser always stops burning for a very short time, when it reaches the top, it results in a small thin fin that I manually remove. I do not know why it interrupts the laser even though it continues to run, but it does not ruin my excitement.
The Acrylic itself is 8mm thick and I cut it very slowly at 250mm / min and 12.5mA.