Hi,i was looking a slider for my canon 7d ,i heard about igus etc .But you know igus and similar parts have dryline plastic bearings , some says it stocks and doesnt get smooth action.But i saw some linear system,it supported by wheels etc. maybe would be better smooth, look at this
http://cgi.ebay.com/CNC-linear-Slide-fo ... 4398f1ff81.
http://cgi.ebay.com/SBG25-Linear-block- ... 414e8e37fc
anyone tried these ones? i really wonder these parts how to perform on action.?