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3-Axis precision mini CNC machine

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langwadt:

--- 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 ---

if you have to ask probably not, definitely not high precision

sokoloff:
If you want to build your own machine, I think the first step is to become familiar with a commercial machine (ideally a low-end and a mid-grade machine separately), spend a couple hundred hours making parts and chips, and see what they did and why.

You wouldn’t start out trying to build a car or start a plumbing company today without experience of what already exists, right?

Is it doable? Of course! Is it a lot of work? Also of course.

langwadt:

--- Quote from: sokoloff on August 22, 2021, 12:53:20 pm ---If you want to build your own machine, I think the first step is to become familiar with a commercial machine (ideally a low-end and a mid-grade machine separately), spend a couple hundred hours making parts and chips, and see what they did and why.

--- End quote ---

and a CNC is great help when building a CNC

thinkfat:
For something DIY that can mill steel, here's Marco Reps router: https://youtu.be/vB_FvkllLPc

This is the Finale of the series.

Of course the frame is not aluminum.

PaulAm:

--- Quote ---
Quote from: sokoloff on Today at 12:53:20 pm

    If you want to build your own machine, I think the first step is to become familiar with a commercial machine (ideally a low-end and a mid-grade machine separately), spend a couple hundred hours making parts and chips, and see what they did and why.


and a CNC is great help when building a CNC


--- End quote ---

At the very least, access to a machine shop with decent quality manual machines (and the knowledge and experience to use them).  If you don't know what you're doing, the only recourse is to pay somebody for their expertise and buy a machine or kit that meets your requirements.

One alternative is to get a cast iron bench mill drill (Chinese clones are all over the market) and then a refit CNC kit..  These things are > 1-300Kg, so not really that big as far as machines go.  Find the refit kit first before you get the mill though.

The only constant here is that it's going to cost a fair amount of money.  Precision and machining steel/stainless does not come cheap.

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