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Questions tagged [lead-screw]

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Leadscrews are a superior replacement to threaded rods

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1answer
47 views

When to use an anti-backlash bolt for a Z drive gear?

I am building an HEVO printer with a 300x300 build plate and the project includes two T8 lead screws, lead 8 mm ("Tr8x8(p2)"). I read that such long lead may worsen backlash issues, so anti-backlash ...
0
votes
1answer
151 views

Calculating gear ratio for leadscrew

My calibration at my printer is okay. When I try to move 10 mm, it's exactly 10 mm. But I want to know what is my precision for Z-axis. (not posting the link of the product maybe it's not ...
4
votes
1answer
499 views

Are stepper flex couplings important? How important?

TL;DR: On my particular printer design, it definitely appears the company switched from flex couplings to solid couplings on purpose to improve the printer, and to prevent well-meaning users from ...
3
votes
5answers
225 views

Choice of lead for lead screw

This video brought to my attention the 8 mm lead of the Ender 3's Z axis screw, which seems like an exceedingly bad choice from a standpoint of accuracy with respect to common grid alignments in the Z ...
10
votes
4answers
3k views

Are there practical reasons to NOT use a stepper motor with lead screw for the X and or Y axes?

After a few months of printing with my Prusa Mk3 (with plans to get a second one soon), I have been wondering about making my third printer a home-built one was a larger print bed than the Mk3. One ...
5
votes
1answer
5k views

Z axis: Stepper motor and lead screw torque calculation

I am trying to figure out some calculations regarding stepper motor and lead screw. These are the things need answer: Selection stepper motor to lift given weight? Amount of load threaded rod can ...
5
votes
1answer
110 views

Why not use GT2 en lieu of a Z-axis threaded rod or leadscrew?

Having just re-read Tom's excellent answer to my question Advantages of GT2 over a rack, as my comment ponders1: Why is a threaded rod, or lead screw, used for the Z-axis movement in a Prusa (and its ...
2
votes
1answer
330 views

Lead screw holder - shall I buy metal or just use a printed one?

I am on the way to building my own printer using 2020 profiles, TR8 * 500mm lead screw for the Z-axis. Still thinking if that will be a h-bot or coreXY, but this is another story. As the printing ...
7
votes
3answers
5k views

Does anyone know the thread size (pitch and lead) of the Anet A8's lead screw?

I bought a new printer, and unfortunately the left nut for the lead screw isn't tapped. Does anyone know the thread size, w.r.t. both pitch and lead, of the lead screws?
6
votes
3answers
625 views

Lead screws - M8 instead of M5?

I am building a Prusa i3 MK2S (Dolly). I find it very difficult to find M5 rods for the Z axis, I have an M8 lead screw with 8 mm lead, So I thought since M8 is widely available online I could ...
3
votes
1answer
178 views

What size is the lead screw

So I am fairly new to 3d Printing and have a question that is probabley stupid. I built a 3D printer kit a while back but now I want a large printer to play with. I would like to build a 300X300X400 ...
7
votes
3answers
14k views

Would using a leadscrew with 1 or 2 mm lead, en lieu of 8 mm, result in a better printer?

By "better" I mean "more precise"... With respect to a RepRap P3Steel or Wilson II, I am getting some 330 mm T8 leadscrews for the Z-axis movement. There seems to be a choice ...
5
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3answers
1k views

Is there a reason for the z-axis M5 drive nut to be super loose on the lead screw?

So I bought a prusa i3 kit from a company called folger tech off of ebay. I've built it and even printed out a few parts, but I noticed that a lot of noise seemed to be happening only while the x-axis ...