Loading

Inductive proximity z-probe adapter. Works with glass cover.

by paul_delta, published

Inductive proximity z-probe adapter. Works with glass cover. by paul_delta Dec 12, 2015
3 Share
Download All Files

Thing Apps Enabled

Order This Printed View All Apps

Contents

Design Tools

Sketchup

Use This Project

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag.

Print Thing Tag

Makes

Thing Statistics

6481Views 661Downloads Found in 3D Printer Parts

Summary

Note: this adapter will work for detachable probes only or as temporary attachment for calibration. You can't just add this adapter to permanently mounted probe that only 2-3 mm higher than nozzle.

My aluminum Kossel bed is not so flat, so I covered it with 3mm glass. Much better, but inductive probe stopped working.

Here is the adapter I made. You will need a #14 0.08" (2mm) nail and very light spring (I used one from this kit http://www.homedepot.com/p/Everbilt-Spring-Assortment-Kit-84-Pack-15642/202045461). Actually, it works even without spring because of the weight of nail/tip. You can replace the spring with thin U-shaped piece of plastic (PET bottle, etc). This modification doesn't affect the sensitivity and precision.

Don't forget to adjust the z-probe height in firmware. I had to make one more :)

How it works: https://www.youtube.com/watch?v=83hY3M8QLtg
Animated probe video: https://www.youtube.com/watch?v=C8dT_2mZWXk

Printed with PLA 180C, 044mm nozzle

  • 0.2mm height
  • 0.5mm manually set width
  • 30 mm/s with slicer cooling enabled
  • better to print together for optimal cooling

Print Settings

Rafts:

Doesn't Matter

Supports:

Doesn't Matter

More from 3D Printer Parts

view more

All Apps

3D Print your file with 3D Hubs, the world’s largest online marketplace for 3D printing services.

App Info Launch App

Auto-magically prepare your 3D models for 3D printing. A cloud based 3D models Preparing and Healing solution for 3D Printing, MakePrintable provides features for model repairing, wall thickness...

App Info Launch App

Kiri:Moto is an integrated cloud-based slicer and tool-path generator for 3D Printing, CAM / CNC and Laser cutting. *** 3D printing mode provides model slicing and GCode output using built-in...

App Info Launch App
KiriMoto Thing App

With 3D Slash, you can edit 3d models like a stonecutter. A unique interface: as fun as a building game! The perfect tool for non-designers and children to create in 3D.

App Info Launch App

Print through a distributed network of 3D printing enthusiasts from across the US, at a fraction of the cost of the competitors. We want to change the world for the better through technology, an...

App Info Launch App

Quickly Scale, Mirror or Cut your 3D Models

App Info Launch App

3D Print a wide range of designs with Treatstock. Easy to use tools to get the perfect result. The global 3D printing network that connects you with high-quality and fast working print services nea...

App Info Launch App

This probe would probably hit the objects being printed?

what software are you using to autolevel in the video? It looks very nice. :)

It's not autolevel, it's just heat map measurement in Repetier Host.

Awesome, do you have the average size of the spring used for this model ?

Jan 24, 2016 - Modified Jan 24, 2016

an a pen-clicker mechanism be somehow incorporated so that at the end of the probe cycle the Z is more aggressively engaged to activate a cam just like the case of the classic and ubiquitous pen. Maybe even a pen can be torn apart and part of it can be rep-strapped into the locking mechanism for calibration.

This is a video of the pen-clicker mechanism:
https://www.youtube.com/watch?v=8DIdC0h1Fbc

The cam part could be incorporated in the thin neck, between the activation level of the induction probe and the induction probe itself, an area which is "dead" anyways.

The pin dragging prevention can easily be done with another spring that keeps it at the same level, maybe take the very weak spring of the pen you will sacrifice to take the cam...

Interesting idea, but I think that clicker mechanism will add an additional error affecting the reliability of whole assembly. Every segment of clicker must have equal height and all parts must have zero backlash.

I don't think it will introduce any additional error, because the probe will trigger always before hitting the critical point where the pen-clicker would retract it. So it will basically be a spring-based triggering until the force is high enough to click the mechanism ... everything that happens after this clicker activation YES it's unreliable to measuring but this will happen when the actual measuring is done.

I don't have the skills to design that but I think it should really be tried. No magnets involved and the release doesn't rely upon going somewhere to hook the pin into releasing from the magnet. It's an up/down movement of Z.

Awesome mechanism, but what prevents it from be dragged across the print while printing?

Dec 13, 2015 - Modified Dec 14, 2015

Good question. Actually, my probe has magnetic mount http://www.thingiverse.com/thing:1198256 and detachable, so I don't have this problem. I'll make a note in the description. But it's easy to put it in/out only for occasional calibration.

Kossel magnetic z-probe mount with zero X-Y offset to avoid effector tilt problems/errors. Tested 100%.
Top