1. #1
    Hi Guys
    I'm planning to convert my manual Sieg SX2 mill (from arceurotrade). Having read round these forums and other sites I think I've got a rough idea of whats required.
    I'm just planning on 3 axes.
    Initially I want to use the original leadscrews (for x/y)
    I envisage mainly milling aluminium, maybe some light work in mild steel.

    I'm thinking Nema23 steppers at about 2 - 3Nm will be OK.
    Before I start spending, could anyone comment on these kits or suggest alternatives?

    http://www.diycnc.co.uk/html/cnc_systems.html system4c enclosed unit kit
    http://www.rhonmac-cnc.co.uk/ Kit EX23-5

    Does anyone sell the electronics/motors prewired and fitted in an enclosure?

    Apologies if I've posted to the wrong forum or asked excessively dumb questions!

  2. #2
    Hi as ive got the system 4 enclosed from roy i can add it is very well built i had it build and running in half a dat took a bit of soldering but was pretty simple, just email roy and he is very helpful and quick at replying, onli sujestions is to get a higher voltage to speed up the rapids, but i find 1500mm a minute ample. Ive had it milling aluminium and steel! Hope this helps.

  3. #3
    Quote Originally Posted by ian823478 View Post
    I'm thinking Nema23 steppers at about 2 - 3Nm will be OK.
    Hi Ian,
    For the X and Y 3Nm should be fine on ballscrews but on ACME you may need more,for the Z I'd go with something a bit bigger. maybe a NEMA34 4.5Nm...

    For the Kit, I'd go to Zapp, the guys there actually know what they are talking about... If you give them a call and tell them that you want to convert a X2 they will be able to tell you what you need (Motors, drivers, BOB...)

    Also, If you can afford it, change the X&Y lead screws to Ballscrews. It makes a hell lot of difference. No backlash!
    Backlash is OK on Manual mill, but on CNC it is a killer!


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