YYC, Alberta, Canada - Primo J

Hi Everyone,

My builds has been in “progress” for the last year, and recently refocused my efforts to advance and complete this project. I figured starting my own build thread would help drive some accountability among other benefits.

I am currently awaiting my TMC2209 drivers to arrive and then I should be close to making it move.


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Awesome to see another Canadian :slight_smile:
Cau3
Over here

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I’m up in YEG, willing to help ya out if you need.

Get it done, these machines are loads of fun.

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Today I spent my free time building the base for my machine.

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It’s alive!

First order of business - correct the Z travel direction.

Second order of business - learn to operate. Ha.

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Awesome, nice work. What’s the first cuts going to be after crowning around haha.

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@Waspjr you are correct. I did opt to perform the crown test.

I think it turned out okay. What do you think?

I am not sure what my first cuts will be. I think I’ll stick to drawing for the first little bit.

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Looks good man so satisfying watching it.
Such a fun thing I got some door skin and messed around. Some packing foam is good to use as well.


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After completing a number of drawing test patterns I decided I felt comfortable enough to advance to cutting. I would consider this test piece both a failure and a success. I am happy with the floor and wall finishes, but then size of the piece and material caused thin wall blow outs.

I am thrilled I’ve got this far.

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So I have a learned a few things about my machine over the last couple days but leaves me with a few questions now.
It turns out that I purchased a 1 Start Lead Screw for the Z axis (instead of 4 start) which has caused me to set steps per unit at 1600 to be accurate. I’ve attempted to adjust my code and boot load the bin file again, but it didn’t take.
I adjusted here on line 1167.

After bootloading from SD, M502 displayed M92 Z as 400 still. I adjusted to 1600 with M92 command, and then used the TFT35 to save to Eeprom. I think I should be good now as it remained at 1600 after a reboot of the machine.

Now for the questions:

  1. Why didn’t 1600 take from bootload? Does the TFT have priority or should have I have adjust in more areas than just line 1167 of the code?
  2. What are the trade offs between 1 start and 4 start. Would it be recommended to change to a 4 start?
  3. It appears the SKR board will operate fine without the SD left in, I was under the impression I should leave in. Can someone clarify?

X axis calibration.
5 mm movement.
.05 mm deviation over 5 mm.

Should I quit?
I don’t think I can get it much tighter.

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Today I added a couple upgrades.
Vac hold down and monitor/dedicated PC.

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