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Here is the actual spindle and the broken grippers.

Hello everyone,
I'm currently in the process of restoring a 1986 CNC machine that's in pretty good shape overall. However, I'm faced with a dilemma regarding the spindle grippers. I've been quoted...

Hello everyone,

I finished my wiring diagram! It would be nice if someone could have a look at it and let me know what they think ? Any suggestions or wrong components choice?

A big thanks...

Thanks everyone!
Finally I attached the ballscrew and gently hit with a hammer the inner race of the bearing to just have enough thread to be able to screw the lock nut and push the bearing in...

Hi,

I'm trying to assemble supports of 2010 ballscrews. I succeeded one but two of fixed side support (BK15) are very difficult to push. Do you have any recommendations ?...

To solve these mechanical problems, do you thing is it enough to add angle steel, gussets,... ?
Do you think there is a better design to solve this problem?

I choose the extrusion way, because I...

Thanks for your comment, very nice machine! What do you cut ?

Maybe I'm wrong but I've read somewhere that it is stiffer to have high slide and short side plate. This is the reason why i choose...

Thanks for your comments, I will add as much as I can.

Is there anything else that I should consider? Any criticism is welcome :)

If everything seems to be ok, I will begin to build it :D

Thanks, it's a good idea. I wanted to use this type of screw as it could reduce cost of having 4040 corner but to screw two profile together some holes have to be made ....

Hi,

I'm currently building a CNC router of 1.8x1.2 meter to cut wood (and probably test aluminium).
I use profile 8 series and 20mm aluminium plate, 4 NEMA 23 with a gecko G540.

Any comment...

Thanks for all! I inverted X and Y axis, you're right.
I will take into account your comments and will probably go for 20mm lead.
I can definitely move forward with the project. I really appreciate...

Oh that's really nice ! Thanks you so much for your help!


Today I use a 800w spindle with my first small CNC, I will certainly upgrade it to 2.2KW so I can add ~6kg to the gantry. The weight I...

Thanks for these explanation, I appreciate! I’ll try to give you more information and to be clear.
In attachment you can find a quick sketch of what it will looks like. I use aluminium profile 40...

That's really slow! I wasn't expecting that. What do you recommend, should I use R&P?

Sorry but I'm confused, how do you calculate this critical speed? I didn't get this result at all.
and why RM2010 ( KL23H2100-35-4B 381 oz In) will move twice as fast at the same rpm? I searched a...

Thanks all for your answers and your explanations. I'm learning a lot here.
A 10mm lead will give 236 IPM too.
Just because I'm interested, ger21 how would you achieve to have this speed?

Thanks a lot for your answers!
I think I will go for a 10mm.
Smaller pitch means more torque and more precision, is it correct?
20mm diameter screw is it large enough for 1.8m?

Hi,

I'm currently building a CNC router of 1.8x1.3 meter to cut wood. I need some advice to choose the ball screw size.
I was thinking about using a Hiwin RM2005 with KL23H2100-35-4B 381 oz In....

I have received an estimation today for Aluminium 6082 T6 : 200Frs(184 Euro) / plate.
is it a good price? It seems too expensive.

Thanks for your answer.

I will make the changes.
I was looking for someone that can waterjet cut 20mm aluminium plates, but it's pretty rare (and not cheap!)
Do you have maybe any...

Hi,

I'm working on a new CNC since a few months. Is it possible to take a look at my new design? All suggestions are welcome :)

It should have a final size of 1600x1100. I use profile 8, Hiwin...

Thanks for your answer. I don't have and can't find any documentation. But in general do you know if there is a big difference between recent driver and old one ?

Which stepper driver do you...

Hi everyone,

I have three stepper driver that seems quite old. It's Seledata SDM 52. 12V-42V 2.0A (here is a picture of the components : ResizeofIMG_0190_zps1d2521fe.jpg Photo by nam_cnc |...