The attached pics show my Z axis and to reduce the weight I though to drill at random 1/2" or 3/4" holes even under the slide rails. The plate is 3/8" thick aluminum, 6"x 18.25"

Is it a good idea?

Nicolas,
Drilling a lot of holes may cause the plate to warp. Holes under the rails should not be a problem since the rails act as a stiffener when bolted
to the plate. If you drill addtional holes between the rails for weight reduction that is where you are most likely to get warpage.
Holes between the rails should be done in the center of the plate and arranged so that you have the equivilant of x patterns in the plate
about the holes.

Before you anything, maybe you want to see just how much weight reduction you are getting since  it may not be worth doing in the first place.

RICH
 

Very good points RICH which I had never thought. So it will be NO drilling

I have the same set of long hex keys, they are so good.

I solved the heavy Z problem by using an air cylinder.  Let me know if you want further details.

-Nick

I solved the heavy Z problem by using an air cylinder.  Let me know if you want further details.

-Nick

Dont know about the air cylinders but it will be interesting to see further details

Quote from: Bodini on November 06, 2013, 02:03:22 PM

I solved the heavy Z problem by using an air cylinder.  Let me know if you want further details.

-Nick

Dont know about the air cylinders but it will be interesting to see further details

Ok I will get some pictures and report back.

Quote from: Bodini on November 06, 2013, 02:03:22 PM

I solved the heavy Z problem by using an air cylinder.  Let me know if you want further details.

-Nick

Dont know about the air cylinders but it will be interesting to see further details

Started a new thread about it.  http://www.machsupport.com/forum/index.php/topic,25826.0.html