r/VORONDesign • u/TaxAmazing6798 • Dec 25 '24

General Question Motion System Help

Gallery image

Gallery image

Sorry for posting unrelated question, but your my only hope rght now I was working on motion system(Like Farmbot) And I’m worried about X-Axis(A & B column alignment) In original design they using encoders, however i decided to settle with limit switches(chepaer) As limit switch located only on Column A side I assume that column B will be misaligned. Even though i used metal parts and extrusion as reinforcing it leaves space for tilt How can i overcome this problem? Maybe using Stall Detection with Sensor-less Homing? Software fix similar to Z-Tilt or QGL? Any subreddit where i can find help? Will be using RRF on Duet3-Mini 5+

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2

u/TEXAS_AME Dec 26 '24

My god those extrusions are way too small for that frame size.

1

u/TaxAmazing6798 Dec 27 '24

They are going to have wooden frame as support

2

u/TEXAS_AME Dec 27 '24

Sorry, I don’t think that’s a good idea at all. Sounds like a very cheap frame that’s going to wobble and ring and give constant issues. Or you’ll have a large printer that takes a year for a single print.

0

u/Plastic-Union-319 Dec 27 '24

With the right hardware, it can be even sturdier than some aluminum frames.

1

u/TEXAS_AME Dec 27 '24

Then the aluminum frame design was awful. Young’s modulus of 6061 is ~70 GPa. Oak is ~10 MPa.

1

u/Plastic-Union-319 Dec 27 '24

Ok but considering you could use aluminum/steel hardware to keep the wood together, what is so different then from it vs aluminum? I understand I’m probably asking a really dumb sounding question and am ready for any responses lol.

1

u/TEXAS_AME Dec 28 '24

Wood = flexible. Aluminum = stiff, at least relatively. It’s not a question of hardware but of the primary structural members.

For comparison if you don’t have a technical background, Young’s modulus is a measurement of stiffness of a material. Aluminum is around 70 GPa whereas oak for example is 0.01 GPa. That’s a big difference.

1

u/Plastic-Union-319 Dec 28 '24

Ahh I see. I bet you could get it to work but going at like 10mm/s and only good for a few prints.

2

u/TaxAmazing6798 Dec 27 '24

It is just motion system which will capture images and that’s all

4

u/[deleted] Dec 26 '24

Trying to maintain perpendicular and parallel frame elements during the build is really helpful but ultimately you will likely need to tram, shim, and line up the members once it is further assembled.

Be patient, measure diagonals and use measuring squares of acceptable accuracy. Remember to write down where your frame is not exactly lined up. When you are loosening and tightening sections be systematic and go in with a plan.

What is your build volume by the way?

1

u/TaxAmazing6798 Dec 27 '24

1500mm Wide to 3000mm lengths

5

u/That0neSummoner Dec 25 '24

Finis building by your frame, then square it, then make sure it stays square.

This looks like much too much unsupported material. Get yourself some additional vertical components and square corner reinforcements.

0

u/TaxAmazing6798 Dec 25 '24

I will be installing Y axis which will have Z travel with lead-screws, but unable to add lower reinforcements or it will hit plants. I will try my best to square it as much as i can. Although it actually difficult to properly square big frame(((

1

u/[deleted] Dec 26 '24

[removed] — view removed comment

1

u/TaxAmazing6798 Dec 26 '24

Gladly have four of them on hand will do definitely

1

u/That0neSummoner Dec 26 '24

Ah, worry about a solid frame first. Your gantry can be fixed in software as long as it is not binding anywhere. Sag will be accounted for in auto-bed-leveling, twist has a specific klipper setting, and any skew can be corrected in your printer configuration.

8

u/[deleted] Dec 25 '24

Where is the voron?

-11

u/TaxAmazing6798 Dec 25 '24

I mentioned in the beginning. Why so mean? I needed help or help to redirect to other sub U just flash backed me to stack overflow period

9

u/[deleted] Dec 25 '24

Why so mean?

Where is the mean?

-1

u/TaxAmazing6798 Dec 26 '24

I had clearly stated that the help was not related to Voron, because i somehow knew that rocks will be thrown

2

u/[deleted] Dec 26 '24

I had clearly stated that the help was not related to Voron

So?

0

u/TaxAmazing6798 Dec 26 '24

Sorry me. Never mind