Designing DIY CNC Milling Machine

spumco wrote:

Ok... for a 'not dumb' test, cast a simple beam.

 

I might have made myself unclear. By 'dumb test' I meant that I wanted to ask whether it even makes sense trying to add aggregate so I won't wast a bag of cement on attempts if it turned out to be bad idea in first place. I was doubtful because I failed to find anything about mixing aggregate in in Cement All datasheet.

I never meant to criticise your suggestion about casting test pieces. Sorry If I sounded this way

And thanks for even more tips on constructive testing!

 

No offense taken, but thank you.

I think the fact that CTA sells aggregate-filled CSA concrete indicates it's worth a try.  If you look at some of the other products on their site, one of them indicates up to a 100% aggregate loading can be used for deep pours.  i.e. 50-50 grout to aggregate by volume.

So if you have access to some cheap aggregate with a diameter less than 1/3 your casting's smallest cross section, it should be a good way to extend the cement.

On the down side... if you do have to drill the casting later, it'll make it MUCH more difficult.

Well, that's one heck of a bad luck.

I bought another granite slab only to discover after measuring how bowed it is... search continues...

Spammer booted.
Thank you.