On 13 June 2012 18:47, Przemek Klosowski <[email protected]> wrote:
> You need to 'get a quote' so I called and talked to a rep, and > felt that they are not a small/hobbyist customer oriented. You can buy balls crews from Amazon: http://www.amazon.com/THK-Steel-Precision-Assembly-BNK-0801/dp/B006P583QW/ref=sr_1_3?ie=UTF8&qid=1339611871&sr=8-3&keywords=8mm+ballscrew But not cheaply compared with, for example: http://www.zappautomation.co.uk/r08025rswp0-ballnut-p-142.html?cPath=1_59_66_189 > Another useful information was that there are three manufacturing > classes, in order of increasing accuracy and price. Standard rolled > thread is accurate to 0.004in/ft; precision rolled good to 0.001/ft, > and ground thread better than 0.5mil/ft And I have argued several times that we are almost always going to be happy with the inaccurate stuff. Especially over the length of a lathe cross-slide. (and where you are probably touching off anyway, so only really care that 50 thou is very nearly exactly 50 thou. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
