X Axis Sizes
Hi there,
a few weeks ago, I broke the plastiC on the left side of my X Axis. Tighten the screw too much, shame on me.
it's named "X-end-motor" in the manual.
https://d17kynu4zpq5hy.cloudfront.net/igi/prusa3d/qT444MbWrAxURST3.medium
the blue arrow.
I fixed it with glue and printed a spare part of it. The spare part looked perfectly fine and I switched it.
But it seems the holes for the metal parts are a bit too small. I can put the steel tubes in(but need alot of force), but I think the X Axis is a bit too large, I can't position the printer head the Z Axis all the way down. As far as I screw it down, I have to use more and more force.
So I want to fix that problem with a drilling machine. I think I just need the enlarge it 1-2mm and it will work perfectly fine.
Which ends up with my question. What are the exact sizes of the X axis.
- What's the diameter of the holes? What's the deep?
- How much of the steel tube should look out of the plastic? What's the whole length of the x axis?
And at least. Should it be a problem to enlarge it for 1-2mm? I think it shouldn't be a problem, but I just want to ask.
Best regards
Kevin, the guy, who tighten too much
Re: X Axis Sizes
Hi Kevin,
can you point to the particular holes on the picture, and show a picture off the assembled printer showing the problem?
1 - 2 mm seems a lot to be drilling out!
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
Re: X Axis Sizes
My paint skills are horrible but I think you can see what I mean.
I already dismantled the printer, so I can't show a picture. I can make a picture of the printed part at the evening, but as far as I see there isn't a problem.
I just want to expand this two holes a bit so I can push the two rods a bit further in. I think that will solve my problem.
The problem is, if I move the x Axis down to the bed, to more I move it down the more resistance I got from the Z-axis screws.
Because the screws are a bit loosen on the top and fix on the bottom, the problem seems to be the width of the x-Axis.
That's the reason I asked for the correct width of the whole axis, so I can compare it with mine.
Or in other words:
9. Preflight check
Step two doesn't work, the resistance on the screw is too large.
https://manual.prusa3d.com/Guide/9.+Preflight+check/514?lang=en#s8292
https://d17kynu4zpq5hy.cloudfront.net/igi/prusa3d/VjdibZsN3O4TsaTl.medium
Re: X Axis Sizes
Kevin,
the X ends should have little square ports at the bottom of the holes so that you can visually inspect that the smooth rods are bottomed out in their holes.
I had a similar issue with reprinted parts (but I saw they did not seat properly) and I forced them together with a (padded) wodwoorking clamp 🙂
Not looking forward to next disassembly...
Re: X Axis Sizes
@bozo
If you use a heatgun it is pretty easy to remove tight seated rods from the ends.
Just make sure that you don´t heat it up to much, otherwise your rods and ends will be "glued" together.
Wer freundlich fragt bekommt auch eine freundliche Antwort.
nec aspera terrent
Re: X Axis Sizes
Hi there,
I used some abrasive paper and a screwdriver to enlarge the holes. It worked perfectly fine and I could push the rods in alot easier. A
A drilling machine would be to much probably, I just needed about 1/10mm maybe less.
The tip with the square points was great, I already forgot about them.
Thanks for the help.
I used some oil, a hairdryer and a tong to remove them. Just be aware to not damage the rods with the tong. I used some old clothing material for it.