Many of us have smaller gantry CNC's that we use to build our Joes2006. I have a JGRO and most of the parts can be cut in one job. The long torsion box parts cannot. The options are reducing the parts into two pieces and gluing them together or using them as a template to use with a hand router, getting someone else to cut them for us, or as I will try to explain cutting one long part in muliple cutting jobs.
I don't have any of the real Joes2006 files at work so I'll use simple drawing I made in paint. Material thickness is 1/2" for this example. It's important that during the whole cut to maintain your x & y zero.
Step 1 - long part
Nothing to say here. Just our work file to start with
Attachment 181307
Step 2 - Setup postioning pin cuts.
I start by drawing out a box to the length I want to break the cuts into. I then add 1/8" circles to where the postioning pins are. I save this file into two seperate files named part1_cut1 and part1_cut2.
Attachment 181308
Step 3 - Seperating the cut jobs. part1_cut1
Delete the section of your part outside the box.
This step will produce 2 jobs.
1 Drilling. Set to drill all 4 holes. Positioning holes 1 will be drilled to 1" depth and positioning holes 2 will be drilled to 1/2" depth. In my case I use 1/8" endmill.
2. Profile cut the part. In this example there is a open vector which I cut outside the line.
Attachment 181309
Step 4 - part1_cut2
I open the second file part1_cut2. I delete all vectors within the box other than the positioning holes, then move all the vectors over until the second holes are on top of the first holes. I set a profile cut. No further drilling cuts is required for positioning.
Attachment 181311
Step 5 - Cutting parts
1. Run drilling part1_cut1. When complete secure the wood with screws into the first position holes. #8 counter sunk work well for me.
2. Run Profile part1_cut1
3. Remove screws and slide the wood until positioning holes 2 are on top of positioning holes 1. Screw in positoning holes 2 with the same screws.
4. Run part1_cut2 profile.
That should do it.
Comments and suggestions welcome.