Project Beaver

[OMLCNC]

I like the idea of the dust cover on the Z axis. Dust gets everywhere especially cutting wood. I've made a dusthood for mine which connects to my Cyclone filter - see here post #56 and it helps. What type of endmill, feeds and rpm did you use on the Walnut?

Thanks
Mike

Dust Cover is a copy of Dean's, there's a picture of it somewhere on the forum. I did add a flat piece of sheet on the bottom of the Z axis to try and stop chips and dust going up inside as well.

The Walnut I used 3 router bits, 18mm end mill for surfacing and cutting the hand hold pockets and profiling the edge of the board (12000rpm 60mm/sec), a 19mm ball nose bit for the well, spot and gutters (12000rpm 40mmm/min), a 12mm v 90 degree bit for the spikes. (16000rpm 40mm/sec).
I'm still experimenting and getting lots of things wrong (you can see were I forgot to check the tool hight and it dived into the board near the well - I did a repair - and lots of swearing)
You need lots of scrap material - I have made about 8 of these boards before I got one acceptable. They take about 45 minutes start to finish with tool changing and 5 minutes of sanding to clean up.

I have made a couple of dust shoes and seen your cyclone set up (I have read your entire build).
I have a double bag dust extraction system 125mm dia pipe. The latest dust shoe is made out of a piece of drain pipe and works well even if it looks a dodge. I will take a picture for you to laugh at some time. I tend only to use it when I'm happy with the program, so I can see when the tool has broken or dived into the job!