Started printing my bits for the MPCNC ‘Burley’. I thought I’d use this thread as a blog to document the process so that other people can learn from my inevitable mistakes.
I brought an Ender 3 Pro just as the Covid-19 lockdown started. I’m fortunate that I can fully work from home so apart from the lockdown, it’s great working from home rather than commuting to London to work.
The Ender 3 Pro is a great little printer. I can’t really comment on the quality as my knowledge of 3D printers is limited to just this one. I can say that trying to get a BLTouch V3.1 to work with it was beyond my capabilities so after wasting a week, learning how to reflash the little board it comes with though having only a 128KB of memory seems rather small, I reverted back to stock and pulled the BLTouch off. After saying that I used to develop UNIX on a 64KB multi-user AT&T 3B2 some many years ago
My thoughts so far is that the Ender 3 Pro is nice, but the printing estimates in the bill of materials are about half the time I’m getting. As an example. I’m printing TopCornerF2 x 2 at the moment and Cura states that it’s around 8 hours 11 mins, which is twice as long as the BoM. My best estimate is approx 180 hours of non-stop printing which is unlikely as I’ll need to get up in the middle of the night to change things. What’s the easiest way to speed things up? New printer?
I’m very familiar with software development and OKish with electronics and utterly useless with tools, handwork or cleaning up after myself. I’ve ordered a 32bit replacement motherboard for the Ender 3 Pro, an SKR with TMC2008’s but may decide to try it on the MPCNC first. I can happily get a toolchain set up for MPCNC firmware and recompiling the code looks pretty simple.
Outstanding work as of 13/4/20:
- print remaining bits - best estimate next Sunday / Monday.
- Source a sheet of 18mm plywood to use as base. Tricky without any hardware shops being open. Anybody local to Clapham/Settle North Yorkshire with 18mm ply going spare?
- Source a spindle. The DeWalts are expensive here
- Build a wiring harness.
- Buy wires for a wiring harness.
- Buy heat-shrinkable rubber tubing for wiring harness.
- Buy crimping tool for all the plugs I suspect I’ll need to make.
- Work out right firmware to flash SKR V1.3 MB to.
- Get PlatformIO working with Emacs. Whilst the Arduino IDE is OK for “Hello World” , it’s not a serious dev environment (INHO).
- Sort out PSU requirements.
- Calculate size of tubes needed with OD of 25mm.
Think that’s about it. If anybody lives nearby, say “Hi”.