New build with recycled parts on a ridiculous budget 120cm*60cm work area

**Nr1madman** · 09-12-2017

Originally Posted by Desertboy

https://www.ebay.co.uk/itm/1PC-Micro...72.m2749.l2649

I got 2 of these and have 2 honeywells same type already.

Now I've found the missing one I can sort the Y out which is the most important anyway as I'm going to use the switches to square the gantry when homing. This is going to take me a little while to work out in linuxcnc lol.

Was thinking about that type aswell.. have some somewhere :D but Im probably gonna buy this kind https://m.ebay.co.uk/itm/Blue-ME-810...IAAOSwIgNXjh-v

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**Clive S** · 09-12-2017

Originally Posted by Nr1madman

Was thinking about that type aswell.. have some somewhere :D but Im probably gonna buy this kind https://m.ebay.co.uk/itm/Blue-ME-810...IAAOSwIgNXjh-v

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I personally would go with this type https://www.ebay.co.uk/i/22256467184...4960578&crdt=0

No moving parts to go wrong.

**Nr1madman** · 09-12-2017

Originally Posted by Clive S

I personally would go with this type https://www.ebay.co.uk/i/22256467184...4960578&crdt=0

No moving parts to go wrong.

To tell the truth Ive bought that kind for my home switches, was thinking about going mechanical for my limits because of all the forum threads I have seen about connecting proximity switches and different types (npn, pnp) and the problems people have in connecting them. I guess its not complicated and if I get confused I could always get my multimeter and figure out whats going on.
But I just dont want anything more complications right now :)

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**Nr1madman** · 11-12-2017

I think its like this

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**Desertboy** · 11-12-2017

That's my board so we'll see tomorrow ;)

Really liking the 3d mouse gives you so much more control over how you view your model.

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**Desertboy** · 12-12-2017

Going down to south park ;)

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**Nr1madman** · 14-12-2017

Originally Posted by Desertboy

Going down to south park ;)

Make it, show it, love it!

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**Davek0974** · 14-12-2017

The southpark figures are 3d illustrations?? The wood grain looks wrong to be real cuts?

**Nr1madman** · 16-12-2017

Are you sure you need dual pinions if using r&p?
I think the more common option is to spring load the pinion against the rack.. have you checked cncrouterparts design with a pivotplate or the mechmate as it uses similar design.

And I agree about your fusion skills! Impressive!
I find solidworks much more intuitive but I have a really old version so I guess fusion tutorials are on that to-do list ;)

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**Davek0974** · 16-12-2017

If using R&P, yes spring load the pinion against the rack - this takes out 99% of the backlash, but also fit a stop to the motor/plate to stop it being able to disengage or jump the rack if overloaded, a jumping pinion will chew both rack and pinion instantly meaning an expensive fix, far better to stall the stepper.

I use R&P on my plasma table and its been flawless so far.