New start

**Nr1madman** · 17-09-2017

Originally Posted by Zeeflyboy

how did you file down the bracket?

I'd be worried that you introduced an angle on that, and when you then try to clamp it to the plate it is pulling the screw out of parallel.

Congrats on the imminent kid - I've just spent most of this week in hospital with my 5 week old

(he's fine now, gave us a bit of a scare and enjoyed a good long stay at hotel NHS). Difficult to work on the machine from a hospital room!

Thanks for the congrats ;)
Good to hear that you're kid is better! Its never fun to be at a hospital with small children..

I have calmed down and thought about this problem and I'm sure that you are right. Thought I was carefull with the file but you never know ;)
The bad thing about this is that it was my last stock of 20mm aluminium. Gonna screw everything apart and measure some and see if it's fixable otherwise I have to order some new metal. Maybe steel instead as the aluminium is actually feeling flimsy compared to all the steel on my machine ;)

**Nr1madman** · 24-09-2017

Got some more work done

**Zeeflyboy** · 24-09-2017

nice to see it's moving smoothly! did you sort out your screw binding issue?

**Nr1madman** · 25-09-2017

Originally Posted by Zeeflyboy

nice to see it's moving smoothly! did you sort out your screw binding issue?

Thanks ;)

Yeah the screw is working fine now. I found out that one of the screwholes in the ballnut bracket is a little off. Since I have to remake the Z dropplate anyway the easy fix was oversizing the mating hole for the crooked screw. 7mm instead of 6 was a winner ;)
Now I have to secure the dropplate or it will slide to far down!
Still waiting for the htd belts to arrive and I'm hoping the motor will hold it even powered down. How do you guys solve this issue? A block under z when the machine is powered off?

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**Zeeflyboy** · 27-09-2017

All my machines have always held in position switched off.

If your Z is particularly heavy or you are using a longer pitch ballscrew I guess you need to think about either a counter balance of some sort (which will help your stepper out if the Z is particularly heavy) or some sort of lockout system to hold it up I guess.

**Nr1madman** · 27-09-2017

Originally Posted by Zeeflyboy

All my machines have always held in position switched off.

If your Z is particularly heavy or you are using a longer pitch ballscrew I guess you need to think about either a counter balance of some sort (which will help your stepper out if the Z is particularly heavy) or some sort of lockout system to hold it up I guess.

Good to hear ;)
I have 1610 screw for my Z. Ordered 1605 but got wrong pitch delivered. Full refund from Mr China man so I have compensated with pulley ratio to the motor.
I think my Z plate is several kgs in weight. 15mm thick steel around 160x 300mm big..
Will remake it in aluminium at a later date ;)
Really hope it will hold without dropping, have to see when the spindle bracket arrives!

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