New start

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Originally Posted by Desertboy

Inductive sensors will detect aluminum but detection distance is roughly 1/2 they use them in 3d printers all the time for auto levelling the print bed.

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Huh!
Good to know ;)

I think I have a mountingplan for all my swithes now.. been brainstorming for a while ;)
Maybe I can rethink something with this new information ^^

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@wallyblackburn they did sence aluminium but only really close. Much closer then Im comfortable with in a switch :D

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Quote:

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Originally Posted by Nr1madman

@wallyblackburn they did sence aluminium but only really close. Much closer then Im comfortable with in a switch :D

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It would be better to attach a metal washer to a bolt for it to sense

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Originally Posted by Clive S

It would be better to attach a metal washer to a bolt for it to sense

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Yeah! I agree..
I tried it because wallace was curious and desertboy said it worked, not planning to use aluminium as sensory target :)
Have enough steel in my machine to make it work!

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Okey.. limitswitch for y axis!

Like an idiot I placed my 2 screwholes to tight so the boltheads wont fit :D
Will make a solution haha

https://image.ibb.co/dnPyOx/20180208_104103.jpg

The targets will be nuts drilled out to accept a m5 bolt since I only have m5 t nuts ;)

https://image.ibb.co/d49ZVc/20180208_104046.jpg
https://image.ibb.co/f4SA3x/20180208_104023.jpg

Will have to fit a washer in there aswell!

Y axis home switch is a pure example of "use what you have"
I know its like 5 parts to many for the function..

https://image.ibb.co/hFwL3x/20180208_104602.jpg
https://image.ibb.co/gVB9wH/20180208_104611.jpg

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Quote:

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Like an idiot I placed my 2 screwholes to tight so the boltheads wont fit :D
Will make a solution haha

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Stick the bolts in a battery drill and spin the heads them against grinder to make a smaller dia

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Originally Posted by Clive S

Stick the bolts in a battery drill and spin the heads them against grinder to make a smaller dia

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Cheers mate :)

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Woooh..

Moved my machine today to get better access to the side.
Need to mount one more ballscrew, motor, gantry sideplate, cable chain and sensors.

Its getting bloody heavy!!! :D

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I've seen a number of cases here where inductive/proximity switches are mounted to detect when an axis moves tangentially to the sensing face. In all the manufactures data that I've seen the advice is to mount the sensor such that the detected face is presented axially to the sensor. I'm guessing one issue with mounting the sensor tangentially is that it's clearly immune to damage due to crashing the axis into the sensor, but are there any negatives? (repeatability would be the one that springs to mind)

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Originally Posted by Doddy

I've seen a number of cases here where inductive/proximity switches are mounted to detect when an axis moves tangentially to the sensing face. In all the manufactures data that I've seen the advice is to mount the sensor such that the detected face is presented axially to the sensor. I'm guessing one issue with mounting the sensor tangentially is that it's clearly immune to damage due to crashing the axis into the sensor, but are there any negatives? (repeatability would be the one that springs to mind)

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Well.. I have no clue if beeing honest ;)
I know jazzcnc did a lot of tests and came up with super accurate repeatability.. enough for my hobby needs atleast!
The problem with mounting them in line axially is that if you have a runaway axis it might actually overshoot the sensor due to inertia/mass of the axis.. then you have a crushed sensor ;)
I will try it this way!

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