1200mmX900mmX170mm 4axis cnc

[Nickhofen]

With 5mm pitch go with 1:1 ratio. This will give you good balance of speed/resolution.

Thanks Dean, I will do that!

[Nickhofen]

I start cutting and drilling parts from 20mm mdf to see if they fit right, after that I am going to use the mdf parts and my router table to shape the 20mm aluminium.

[Nr1madman]

Nice! For some parts I wish i made a trialpiece first.. smart! ;)

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[Nickhofen]

Nice! For some parts I wish i made a trialpiece first.. smart! ;)

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It is time consuming but stress relief!
I use the clear plexiglass to make the holes,this method is fast and accurate,no measurements to take and nothing can go wrong this way,you see thru the plexiglass where you must drill and just drill,freehand.
The you put the Plexi on the mdf or aluminum plate ,put both on the drill press and make your drills nice and square!

[Nickhofen]

Small update.
First of all I want to say that I am glad for two things untill now, first off all that I start to cut the plates from mdf and not direct on the 20mm aluminium plates.:D
And the second one is that I have those thick aluminium beams!
Warning, cover your eyes this build has nothing to do with what other guys post here :-P

[Nickhofen]

I am about to order proximity switches and mechanical switches also,any recommendations ?
NPN or PNP and what about the voltages those switches,the proximity works,I find a big difference in working current...

[Chaz]

I am about to order proximity switches and mechanical switches also,any recommendations ?
NPN or PNP and what about the voltages those switches,the proximity works,I find a big difference in working current...

NPN = normally closed. Basic Amazon ones work fine for general homing / limits (around £7 each)

[Nickhofen]

NPN = normally closed. Basic Amazon ones work fine for general homing / limits (around £7 each)

Thanks for the reply!
Do I have to use mechanical switches also,I am a little bit confused.:-(

[Chaz]

Thanks for the reply!
Do I have to use mechanical switches also,I am a little bit confused.:-(

Nope, either or.

[Nickhofen]

Mount the stepper motor on the Z axis,slowly growing...