# Aluminium Frame and Linear Sled **URL:** https://forums.maslowcnc.com/t/aluminium-frame-and-linear-sled/13312 **Category:** Sled **Created:** [May 12, 2020, 1:02pm UTC](https://forums.maslowcnc.com/t/aluminium-frame-and-linear-sled/13312 "2020-05-12T13:02:42Z") **Posts on this page:** 1 **Showing post:** 4
### Author: ![emilecantin](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/emilecantin/32/16834_2.png) [@emilecantin](https://forums.maslowcnc.com/u/emilecantin) #### Post date: [May 12, 2020, 7:58pm UTC](https://forums.maslowcnc.com/t/aluminium-frame-and-linear-sled/13312/4 "2020-05-12T19:58:15Z")
Just out of curiosity: what are you trying to achieve here? What’s the end goal of these improvements? @TomD has built a gantry-type Maslow that he calls “Mark II”; his goal was to do some flat-ish true 3D stuff, like a rudder / daggerboard. See here: [Maslow Mark II - 3D](https://forums.maslowcnc.com/t/maslow-mark-ii-3d/9098/162) If you’re only looking to cut 2d stuff, having the sled not touch the workpiece is actually an inferior solution, IMO. The fact that it touches puts your Z-zero at the surface of your stock, no matter how warped it is. If you’re looking to build a traditional CNC, but in a vertical orientation, your Y axis will need to use a ball screw of some sort, instead of regular steppers & belts. A stepper will not keep your sled / carriage in place when it’s turned off, which was the reason for going with these “weird” motors in the first place. Also, I don’t think you’ll get much additional rigidity by going “closer” but not touching. Good point on the friction, though; you’ll probably get a lot more flexibility on the angles with a gantry setup like this. --- _[View the full topic](https://forums.maslowcnc.com/t/aluminium-frame-and-linear-sled/13312)._