New Build 1000x600x200mm (newbie)

**Blackrat** · 29-01-2015

use parallel mates to hold the bearings on the rails ... then use co-incident mates to hold the 10mm plates onto the bearings
you also use a coincident mate to keep the front faces of the two bearings aligned, so when move the one gantry arm, the other will follow

**Noplace** · 01-02-2015

Updated with 20mm plates and a bit of the gantry, do you think it would need more support or can i stick with just the two 40x40 extrusions?

**njhussey** · 02-02-2015

Hi Noplace, your frame needs a lot of bracing and strengthening as does your gantry. Have a look through some of the build logs and you'll see what I mean....these are two sililar to what I think you're aiming for?

http://www.mycncuk.com/threads/6988-routercnc_MK3

http://www.mycncuk.com/threads/8206-...Axis-CNC-Build

**Noplace** · 02-02-2015

Originally Posted by njhussey

Hi Noplace, your frame needs a lot of bracing and strengthening as does your gantry. Have a look through some of the build logs and you'll see what I mean....these are two sililar to what I think you're aiming for?

http://www.mycncuk.com/threads/6988-routercnc_MK3

http://www.mycncuk.com/threads/8206-...Axis-CNC-Build

Hi many thanks for your comment, yea the 2nd link looks more or less like what I'm aiming. as you see in my design the frame ends consist of 80x80 extrusions but I left out 3 pieces of 40x40 which I will attach through out the empty space, I do think that would be enough support and I hope I'm not wrong hehe, otherwise I could get more and enforce further?

for the gantry I guess I still didnt settle on a design in my mind, maybe instead of the 40x40 extrusions I would replace them with 80x80? I apologize I'm not a mechanical engineering just going by my own logic so not sure what else I could add to it to make it better

**njhussey** · 02-02-2015

The most common configuration for a gantry is the L shape. Mostly others use either 80x40, 90x40 extrusion or 100x50 rectangular box section aluminium. There are any number of threads showing this examples such as any of Kingcreaky's 3 builds, Eddy Current's build etc. etc. have a look at these and you'll see the type of thing.

**Noplace** · 05-02-2015

Hi, what do you think of this brother?

**Boyan Silyavski** · 05-02-2015

What Z axis height /work piece/ you are trying to achieve? The gantry seems too high, not sure, may be the perspective on the drawing. For this type of machine 100mm is reasonable, 120mm is best compromise, 150mm is on the limit and more than that is just wishful thinking. Without further reinforcing the gantry with say - a steel plate.