Steel Gantry Machine 1500x750x200

**Sven** · 18-03-2015

Complete with dust shoe:

I have the tube clamped to the z-axis, so it can be set to a height.
The next one would just be on linear rails.

The height of the clamp is only about 30 mm, that requires cross bracing with the rear of the tube or it will flex at high feeds. (It did with this one)
The cast aluminium one is much higer, probably will not need cross brace but you can always add it later, should you need it.

A section of 100 mm pvc pipe can easily be fitted to the 80x80 if you heat it.

Picture of a few years back:

**Boyan Silyavski** · 18-03-2015

Sven, we dont see the images??

**Sven** · 18-03-2015

Oh, sorry guys, I guess you can not see these images they are on another cnc site. I see them in the post but I am loged in to the other site... I'll have to see what I can do about it.

**toomast** · 20-03-2015

My spindle arrived and its bigger than I imagined :)

I hope to find time this weekend to work with CAD so I can order rails and other stuff from Fred next week.
I will delay other electronics purchase as long as mechanical assembly is finished. Also I have ordered 12mm proximity switches.

**toomast** · 25-03-2015

Hi guys! So what do you think about my bed idea?
I would have the big steel sheet laser cut and holes tapped. Then welded to the square tube frame. Then replaceable aluminium bars on top. I want to have it separated from main frame - for easier transport. That been said... CAD calculates 204 kg for the bed weight

.
Overkill?

**njhussey** · 25-03-2015

If you make the 10mm steel base a bit bigger than the strips you can put sides on it and then a drain in one corner and if you use coolant then you can drain it.....if you're not going to use coolant then ignore this

**toomast** · 26-03-2015

Originally Posted by njhussey

If you make the 10mm steel base a bit bigger than the strips you can put sides on it and then a drain in one corner and if you use coolant then you can drain it.....if you're not going to use coolant then ignore this

Thank you sir! I will do it.

**toomast** · 01-04-2015

Things are moving slow...but at least they are moving forward.
I wanted to do all steel Z-axis but as I had something thrown together in CAD I changed my mind. Main reason is weight. Steel Z will be at least 7-10kg heavier. As my hole gantry is at the edge of using servos I will go with aluminium Z design.
I'm not quite finished alu design but it will be from 25 mm thick material.
Here is a picture of my alu design (left) and steel design (right side).