This has been awesome time building. I wanted to say thanks to the amount of information I have gotten from Openbuilds community forum. Information is key. I just wanted to share a alittle of what I built.
I did 3d print some parts, Although I read multi posts that its not worth it to print parts for a router that there is some flex when in use. So I beefed up the printed parts to 100% infill and 10mm thick. I use the Sphinx DFX files and modified them in Fusion 360. I used the another Design in the spindle mount cause I thought it would hold the spindle more rigid. It does there is alittle flex that I need to add a support to the top of spindle motor. But in all it works good. I wanted to try to keep this on the low side of the budget. But we all now how this goes. The end plates on the Y and Z axis are 3d printed and the side plates on the X axis are 1/4in aluminum cut out with a non ferrous metal blade on my table saw and holes drilled on my not so great Harbor Freight drill press. I 3d printed the standoffs holding the stepper motors and the Limit switches. I am using Openbuilds lead screw and lead block for movement.
On to the controller so I wanted to use a Arduino platform. I ended up going with a mega 2560 and a shield from the Eccentric Workshop. Also used there Opto couplers for the mechanical limit switches. I did have questions on wiring and the help there was awesome on there forum. I also wanted to make sure I didn't get any noise from the stepper motor wiring so I got 4 conductor shielded wiring and landed all shields thru a bus bar tied to earth thru my ac outlet. I used the same wiring for my limit switches. I used power 2x24v 15a psu for the stepper motors. 2 motors for one PSU. For the spindle a Chinese 500w from amazon. Any non shielded conductors I stuck the wire in the end my drill and twisted it to help with outside interference. Any wire that I could not twist cause of a sheath I shorted out one end and ground other end to the chassis earth ground. Hopefully to create a drain for unused wiring creating a antennae effect for EMI's. I don't think I need build pics cause its a well known build so I thought I would stick to the important stuff. The picks of panel I designed and router out are a couple of pieces for my simulator. I'm still working out my layout for the panels and learning the machines capabilities. SO as for the info that I have used to build this I believe in free help and info anything I have written about or drawn is available for free. I have no idea what to use on the build license or what it is for so I put the what seemed like the most open! Thanks! Corey
Sphinx Derived Router
I Like the Sphinx design thought I would attempt my first build. I wanted to build this and use Arduino controller with GRBL to be able to learn and understand my machine.
- Build License:
- GNU (GPL3+) General Public Licence
Reason for this BuildI was intrigue with having a home cnc. I also needed one to help build a flight sim cockpit!
Inspired byThe Sphinx CNC
Qty Part Name Part Link Comments 2 Optoisolated Limit Switch Isolator https://www.tindie.com/products/eccentricwkshp/cnc-optica... Link I found this thru the GRBL forum the dicussion on limit switches. 1 GRBLDuino Mega Lite V1 https://www.tindie.com/products/eccentricwkshp/grblduino-... Link The megashield has 6 axis connection. And it was a different hex file then the UNO board 4 Nema 23 https://www.amazon.com/STEPPERONLINE-Stepper-269oz-Length... Link 4 TB6600 Drivers https://www.amazon.com/TB6600-Stepper-Driver-Controller-t... Link 2 PSU 24v 15a https://www.amazon.com/gp/product/B0146IAXYO/ref=ppx_yo_d... Link 1 500w spindle https://www.amazon.com/gp/product/B0154MW4E8/ref=ppx_yo_d... Link 6 limit switches https://www.amazon.com/gp/product/B00MFRMFS6/ref=ppx_yo_d... Link 1 bus bar https://www.amazon.com/gp/product/B007ZZGTT4/ref=ppx_yo_d... Link