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Hello everyone,

It has been three years I haven't wired my steppers. Today I put them all back together to see if they still worked, and here is the horrible sound that came out:
...

Hi everyone :)

I have an assembly ready to be sent to cutting. I am trying to break free all the parts so I can mate them on a flat sheet and create a DXF. I have found a fairly good tutorial on...

As currently designed, rail length would be 2 x 2500mm + 2 x 1300mm + 2 x 70mm.
I asked the AliExpress manufacturer that made my ballscrews if he could machine those rails for me, and he said the...

True, but I also provided a link to the page that describes how they did the rails :) It was done using SBR25UU blocks and 25mm rod. Read this :)
Krazatchu Design Systems



Right, that would...

That is true. Short welding runs could prevent this, right ?

Hi,

The following youtube video shows a DIY supported rail: https://www.youtube.com/watch?v=bGbWBDtzydw
that is explained in the following article: Krazatchu Design Systems

I think this...

Hi everyone,

Solidworks modeling going great so far, I will post pictures very soon (hopefully tonight).

I have ordered a the following things (after using calculation formulas provided at...

Hi,

which components are used on cncrouterparts' rack and pinion Nema23 support ?

Standard Rack and Pinion Drive, Nema 23 | CNCRouterParts

Thanks a lot :)

You're totally right :) I am switching to Solidworks 2015 because I drawings, weight calculation, and assemblies are a bit easier :) I'll probably end up buying a whole new drive system, or maybe...

Also, no one has pointed out that I should use bigger drivers and another PSU ? I currently have 3 24-36VDC drivers, I read that it's very insufficient to use on such a build :/ ?

Just a quick question. Would belt drive be an option for this build ?

What if I use AT/HTD 25-30mm width belt ? Would it be wide enough to avoid flex ?

Ballscrew is way out of price for me,...

Sorry for the delay, I'm moving in so don't always have the time to reply :)

So I've read all of your comments, and am going to redo the overall design to include:
- beefier / stronger grantry +...

I understand the problem of backlash and binding, I know that the obvious solution would be to go with a spring loaded module, but I am just trying to find a simple design, without cutting too much...

That's why I thought of this setup:
286316286318

You can tighten the whole stepper-pinion block against the rack using the large bar applied against it. After it is tightened, you can tighten the...

Sorry I forgot to say: foam, wood, acrylic (not so hard), also aluminium. I don't need anything above aluminium.
I'll be using a 2.2kW water cooled Chinese spindle with VFD, from eBay.

Thanks ! Great to see some positive feedback :) I just updated the model following your advice. Here is the updated picture :) They were 5x5cm beams, i made them 8x5cm beams :)
286280

Thanks for pointing that out :) I should have done that straight away but thought that a model would be better so you guys can play with it. So here are the pictures....

I made a few changes on the model:
- simplified the gantry supports
- added the bed
- changed a few dimensions
- drilled a few holes

Still a way to go, but I'll start soon with the plans in...

Hi,

I finished modeling my machine, and am looking for advice on dimensions. I join to this post the Sketchup model so you can check it out :)

I am thinking:
- 12x12cm beams on the side
-...

Right, if 3/8 has a 24" limit, I don't think 1/2 will work with a 72" long X :) I think I could go 5/8. I'll see what Roton has in store, I'll give them a call.

Nice, thanks for you replies !

Which diameter should I use ? I am worried that 1/2" leadscrews will be a bit thin when 1.5m long (too much flex), don't you think so ?

Hi,

I am building a 1.5m x 1m x 0.5m machine, steel based, Nema23 425oz (2 on X, 1 on Y, 1 on Z).

I am plaaning on using leadscrews, but after reading this forum and other ones, I'm a bit lost...

Thanks for the link, I came across this book this link a few days ago, but not sure I understood everything it explained. That said, I understand why 1/10 or 1/16 is more suitable for our needs than...

I see :) Well, i'll do the experience, since most of what I will order will come from China :)

You mean any personal experience with Chinese orders ? Because looking at the number of your posts, you have plenty of experience ;) I'm assuming you always buy your hardware in the US ?

Would you recommend something else (so I don't waste my money on chinese surprises) ?

This one, what do you think ?

Ok, I'm happy with that answer :) Well, that's good to know, because I was about to pay 40 more dollars for a 256 mcs stepper+driver pack. I'll go with the 128 one then :) You just saved me $40 :D !...

Interesting :) But why are they selling drivers advertised as going up to 256 microsteps since we're only using 1/8 or 1/10 (respectively 8 mcs and 10 mcs) ?

I might be wrong, but doesn't increasing the number of microsteps decreases speed ? As I understand, a stepper will go 200 steps per revolution (generally, unless they're half steps or quarter...