Starting big, making a SLS with Linux CNC

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31 Aug 2016 15:34 #79789 by tommylight
www.ebay.com/itm/3-linear-rails-guideway...d:g:njYAAMXQzr1R4RI4
One of the more normal sets, free shipping.
Beware of shipping for these chinese parts, you a low sale price shown and below in small lettering is the shipping fees that are usually more than the parts.
Or find a used longer linear rail with 2 blocks that you can cut in half and use one block per rail, since you have no cut forces to load them.
I would choose the second option.
The following user(s) said Thank You: wyattwic

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31 Aug 2016 16:20 #79791 by wyattwic
Thanks!

While that is a good example its way out of my budget, however it did lead me to find some other things.

The least expensive linear rail was able to find came out to a build cost of $186 for the X axis. The downside is they only ship in 600mm segments, but I can weld and grind flush. goo.gl/AL2ER9

Welp, I have work to do. Ill get on later tonight and get back to work on this. Thank y'all for your input!

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31 Aug 2016 17:21 #79792 by tommylight
Welding is not an option, it will destroy the bearings in no time.
Go with your design, just add some more lateral support to bearing holders.

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