Parametric Carbon Fiber Arrow Cutting Jig for 3d Printer Delta Arms by GeoDave

Last crawled date: 3 years ago

I needed to cut some carbon fiber arrows to all the same length for a Delta Printer I am building. I did a test of cutting just one arrow using a cutoff wheel on my rotary tool, which seems to be the recommended way to do this. Since cutting the one was quite easy, I made the jig parametric so I could cut 6 carbon fiber arrows at once. I might use my CNC router to put the drill holes for mounting the jig on a piece of board. That way, I should be able to cut them all to quite an accurate length. Even if you do not do it that way, this jig should allow you to cut them all the same length. The lengths would be as accurate as you are capable of measuring. You may have to cut them twice, since it is probably not possible to get the cutoff wheel perpendicular to the arrows unless the cut is close to the end. The 1st cut does not need to be accurate, but the final cut does.
I included the parametric openscad file that lets you change 15 variables along with 3 Stl files for an 8mm dia. shaft. My arrows were 7.5mm, so I used 8. One stl file is for cutting just one arrow. That one is a good one to use for a test print or test cutting one arrow as I did. The arrow I bought from Walmart for $3.25 & is 31" long. In Rev3, I added a variable to allow using only 1 hole on each wing instead of 2 & included a .stl file for this also.
Currently I'm planning to build a modified Delta-Six printer using 1000mm 2060's v-slots for the verticals & 2x 2020 x 500mm's for the bottom & 1x 2040 x 500mm's for the top. That will give me a rod length of about 515mm by my calcs.