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3-Axis precision mini CNC machine

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thinkfat:

--- Quote from: langwadt on August 22, 2021, 12:38:24 am ---
--- Quote from: Benta on August 22, 2021, 12:25:39 am ---Let's not go over the top. The OP specified 0.05 mm tolerances, which is not that hard to achieve.

But the aluminium based machines are either jokes or for plastic cutting. Cast iron is the thing.

--- End quote ---

nonsense, https://youtu.be/_fPTYjScd_w

--- End quote ---

Stefan Gotteswinter is certainly a trustworthy source.

Benta:

--- Quote from: langwadt on August 22, 2021, 12:38:24 am ---
--- Quote from: Benta on August 22, 2021, 12:25:39 am ---Let's not go over the top. The OP specified 0.05 mm tolerances, which is not that hard to achieve.

But the aluminium based machines are either jokes or for plastic cutting. Cast iron is the thing.

--- End quote ---

nonsense, https://youtu.be/_fPTYjScd_w

--- End quote ---

At around 15:xx he says: "it is not made for cutting steel, but you can make it do it." and then shows machining a 316 block, with ridiculously small cuts.
His selection of 316 is not random, 316 is one of the few stainless alloys that's can be machined without problems.

I'm not saying you can't make a machine from aluminium, but then it should have a frame/bed of much larger dimensions than on the hobby machines, and then you might as well go to cast iron directly. They'll weigh approximately the same.

And watch your tone, please.

xzswq21:
Thanks for all your valuable comments
Can I make a customized CNC machine? There are a lot of used precision ball screw actuators and 5 phase stepping motor with encoder, these are stainless steel, plus I can design a controller to control the CNC machine, I think I should install the parts on a Iron frame and align the axes. I want to cut and bore small size pieces, 1"x2" teflon rod or a 4"x4" steel sheet with a 2mm (0.078") thickness,

Benta:

--- Quote from: xzswq21 on August 22, 2021, 11:11:37 am ---Thanks for all your valuable comments
Can I make a customized CNC machine? There are a lot of used precision ball screw actuators and 5 phase stepping motor with encoder, these are stainless steel, plus I can design a controller to control the CNC machine, I think I should install the parts on a Iron frame and align the axes. I want to cut and bore small size pieces, 1"x2" teflon rod or a 4"x4" steel sheet with a 2mm (0.078") thickness,

--- End quote ---

Sure, lots of people do this and there are plenty of web sites describing how. The most difficult part is probably the integration with your CAD software.

langwadt:

--- Quote from: Benta on August 22, 2021, 10:25:44 am ---
--- Quote from: langwadt on August 22, 2021, 12:38:24 am ---
--- Quote from: Benta on August 22, 2021, 12:25:39 am ---Let's not go over the top. The OP specified 0.05 mm tolerances, which is not that hard to achieve.

But the aluminium based machines are either jokes or for plastic cutting. Cast iron is the thing.

--- End quote ---

nonsense, https://youtu.be/_fPTYjScd_w

--- End quote ---

At around 15:xx he says: "it is not made for cutting steel, but you can make it do it." and then shows machining a 316 block, with ridiculously small cuts.
His selection of 316 is not random, 316 is one of the few stainless alloys that's can be machined without problems.

I'm not saying you can't make a machine from aluminium, but then it should have a frame/bed of much larger dimensions than on the hobby machines, and then you might as well go to cast iron directly. They'll weigh approximately the same.

And watch your tone, please.

--- End quote ---

you blatantly stated aluminum machines are "a joke" or plastic only, and while there are plenty of machines that are that (build in all kinds of materiels) that's just not true

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