[grg_p]

I’m going to use the cast iron I cut out of base for ball screw bracket to fill hole left from crank removal.

[grg_p]

Center bracket is going to have to go. It will interfere with ball-screw bracket.

[grg_p]

I don’t feel comfortable taking bracket out with out adding a bracket for support. I saw on another post where he put support on the outside of the column. I really liked that idea.

[grg_p]

I’m not going to cut brace out of solid piece. There’s nothing square on casting so I going to weld pieces together.

[ninefinger]

You probably don't need the external support. The issue is that with the dovetail slides the weight of the head tries to pinch the 2 sides together. With linear guides that pinching force just isn't there.

[grg_p]

I’m sure you are right but my gut feelings are that most of my machining will be done in this area and I don’t want that to be the weakest point of the column. But I’m not an engineer so I could be overly thinking this. And I would rather do it now versus later after it’s finished.

[kayautso]

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[grg_p]

I’m going to mock up my table bearing mount to base bearing mount to see how ball screws are going to work.

[grg_p]

I was going to weld plates together but they are too thick and I would have to put a lot of heat when welding. I’m trying to keep them as flat as possible.

[grg_p]

Finished welding column brace. Don't know it will help but it's done.

[grg_p]

After tack welding 2 plates together I bolted and put dowel pins in to keep from shifting.

[grg_p]

Ordered some delrin rod to make caps for cap screws. They seem to work fine.

[binfordw]

Nice work so far.

So am I seeing the Y axis as a belt drive behind the column?

[grg_p]

Thanks
Yes, I won’t have room in my enclosure for motor to mount straight out the back. Servo’s are 5000 rpm’s with 5mm ball screw so I need to gear them down.

[grg_p]

Getting my column ready for paint.

[grg_p]

I tested positive for Covid. So I’m am down for a while. My sons company decided to get rid of some I beams. I’ve been wanting to make a hoist for my mill so now I’m going to make an electric winch. Everything that goes on or used in my mill is just too darn heavy.

[binfordw]

Good luck with the Illness- hopefully it’s minor.

[harryn]

Your build is looking really good.

Similar to you, we have had something go through the house, but it tests negative to everything so I guess it is just in our imagination.

[grg_p]

It felt more like flue than Covid. Gave it to my wife which made the war department happy. I’m feeling a lot better now so I can get back to working on mill. Thanks for your comments they’re greatly appreciated.

[grg_p]

Got some paint on column. I’m going to use the larger servo on z axis's since it has lower rpm and a brake and I can direct couple it to eliminate gears and belt.