[WillsCNC]

CNC Base

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[WillsCNC]

Bob,

You should be able to get the info off the drawing I hope.

Will

[boblon]

Will,
You said your base was 52.5" along the X axis.

If you get a chance can you tell me that dimension (edit: length) of the X axis extrusion supplied by XYZ?

Thanks,
BobL.

[boblon]

Great, thanks Will.
BobL.

[dfmiller]

Will,
I think using the 4080 for the legs is a good idea. That should stiffen them up. I feel that mine spring around a bit on acceleration and deceleration. I am also thinking that closing in the sides with some plywood would really stiffen it up and prevent any racking that might occur.

I hope your extrusion arrives so you can get back at building.
Bob I am surprised they only have one drawing.

Dave

[boblon]

Will,
Looking at the drawing you posted it struck me that the 8020 extrusion must be all that if what you posted was the entire base assembly.
Considering that it is a machine base for a machine that is NOT static that stuff must bolt together very solidly for that simple of a frame to do the job.
If I can afford the 8020 I will be putting in more legs for other reasons, so mine should work great for a machine half the size of yours. (2'x4').
BobL.

[WillsCNC]

Bob,

Yes the machine will bolt to the top of the frame like Dave did. I plan on adding some vertical supports I'm making out of baltic birch plywood. I also may inclose part of it also. I have some ideas of what to do but can't until I get the frame and machine mounted on top.

Will

[WillsCNC]

Painting cross beams made from baltic birch plywood to go under top

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[WillsCNC]

Going to try this for my Y buttons. May not work but was cheap. I think it was a 1/2" nut with washer built in. I bored out the threads so the metric cap screw would fit in. Not knowing how the sensors work I will give it a try

Will

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[WillsCNC]

My machine shop....... a drill press Making my Z axis bracket out of 1x1x1/8 alum

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[boblon]

Will,
I agree with Dave, sure does look nice and those casters look sweet.
BobL.

[WillsCNC]

Thank Dave and Bob,

The casters are from woodcraft and a lot cheaper than getting them from 8020. I even was able to get them on sale. Dave, the cross members are not attached yet, just sitting there. Will use the angle brackets with tee nuts to the 8020 and lag screws into the baltic birch. Just got back from the store getting the screws.

Will

[boblon]

Hey Will, what size Nema34s did you decide to go with?
BobL.

[WillsCNC]

Bob,

The (3) are 434 oz-in 2.8 A 1.8 deg step

The z is 276 oz-in 2.8 amp

Will

[boblon]

Thanks Will.

I assume you're running a 48v supply with that and looking for about 200-240 in/min rapids? (just a semi-guess).

Are you running Geko's with that?

BobL.

[WillsCNC]

Bob,

I got the STDR-4C from Jeff at Soieneris. He has all the specs on his site. Speed will depend on many factors but that would be a nice rate.

Will

[WillsCNC]

Little things done yesterday and today. Have the gear boxes mounted, cross members attached and the X axis cable chain done. Have just gotten a motor moving on my desk so will do more with that next.

Will

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[boblon]

Lookin' good Will !

That 4x4 sure looks like a nice size, if only I had room for it.

I think I'm going to go with Keling motors, some Geko's and probably a PMDX board, but haven't ordered any of it yet.

I'm hoping you have better luck with your SS. I'm a little surprised that board isn't more popular and therefore developed (unless I'm wrong).

Anyhow, good luck going forward

BobL.

[boblon]

Will,
How solid does that Z structure seem to you. I asked Dave and he said it was pretty solid, but I don't know, the more I look at the various pictures it just seems odd with those V's. I guess I'm just to used to linear rails with bearing blocks.
Probably just too much staring at ya'lls machines while I await 'the call'
BobL.

[WillsCNC]

Bob,

As far as I can tell right now it seams heavy enough but still don't have the correct router mount so that is not on yet. May change my mind later. The Z is not a flat plate and the way its made should give it extra support, like when you put bends in steel or whatever it becomes stronger.... time will tell.

Will