Rejected Because: This idea racked as well and really just took up too much space for it as well...

Well... I got the linear bearings installed and started working more on the gantry and they still rack :( even after adding another bearing from the original idea... So something is flawed with that idea... maybe it's because they're not exact - or maybe the idea just isn't totally good - I dunno... So... I started working on a new linear bearing idea! :) Basically I'm taking regular L-Brackets and rounding one side down with my grinder and installing two bearings two washers and the L-bracket make it just right to ride on the pipe - so far without racking :) Here's some pics of how that looks... basically I was trying to make my own V Bearings and I think these came out pretty good... if these don't work on the pipe like I hope, I know that a similar design will work really good on angle iron (with a point at the top) - but the pipe is already installed :) so I thought I'd give these a try... The last picture is a current look at the machine - I've got the motor mounts and linear screw mounts installed :)

New Linear Bearing Idea New Linear Bearing Idea New Linear Bearing Idea New Linear Bearing Idea New Linear Bearing Idea New Linear Bearing Idea New Linear Bearing IdeaCurrent Look

And here's a video of the gantry moving with these new bearings : Video

It seems a little tight and hard to move - but I think I can loosen that up a bit but I want to see if it loosens up with use...