1 Topic by Devestat

  • Devestat
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Topic: Workbench z leadscrew

I have created a couple of other threads on the issues I have encountered with the Workbench after three days of ownership, but I see an impending disaster for the printer's z leadscrew.

As the table is moved a soft grinding sound can be heard from the assembly which is remedied by applying slight upward pressure on the table.

I can only assume that the moment (torque) being applied to the leadscrew and z rails from the massive cantilever beam that is the table will cause issues in the future when it comes to z dimensional accuracy and wear on the leadscrew. I am diasappointed that another rail at the front or counterweight was not included in the design to counter this problem. It isn't an issue on the sd2 because the 6" bed is much shorter and lighter by far, but I can see the droop in the table on this machine.

I would like to hear from a designer or engineer regarding whether this is actually an issue or if I am overreacting.

2 Reply by cpsmicahel

  • cpsmicahel
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Re: Workbench z leadscrew

I have there phone # if you want it

• Solidoodle Workbench Apprentice
• Creates plastic parts up to 6" x 6" x 8"
• Heated Aluminum Build Platform with Glass Bed
• Dual extruder

3 Reply by wardjr

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Re: Workbench z leadscrew

All else being the same design as an SD3 there really shouldn't be a structural issue.  That doesn't mean it's the best design but it is adequate.  You should check the bushings to ensure they are properly installed and everything else is secure.  Then add a small amount of grease to those guide rods and the threads.

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

wardjr's Website

4 Reply by shields1.as

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Re: Workbench z leadscrew

What type of grease should be used? Silcon or oil based?

wardjr wrote:

All else being the same design as an SD3 there really shouldn't be a structural issue.  That doesn't mean it's the best design but it is adequate.  You should check the bushings to ensure they are properly installed and everything else is secure.  Then add a small amount of grease to those guide rods and the threads.

5 Reply by wardjr

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Re: Workbench z leadscrew

It really doesn't matter just don't put so much on that it gets all over the plastic parts.
I prefer lithium grease or even a light coat of oil.

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

wardjr's Website