Hinged Ganry with ABL probe

[adamfilip]

Working on a new CoreXY printer
and was hoping you guys could give me your two cents on the basic idea of how ABL is handled in this gantry design

A Special gantry for openbuilds vslot using Mini V wheels
it also include the ABL (Auto Bed Levelling) Micro switch so when pressure is applied to the nozzle it hinged upward slightly to trigger the microswitch

http://www.thingiverse.com/thing:1737901

Video https://youtu.be/MJS9SiPSY3Y
https://youtu.be/MJS9SiPSY3Y

[Roxy]

Do you have one working? Do you get good M48 numbers? Is that spring in the center where you set how much force it takes to lift up gantry?

[adamfilip]

Haven't had time to test it. But it only needs to lift a tiny amount to trigger the switch. And yes spring is to set tension

[adamfilip]

Here is it working. https://youtu.be/Iq-L2mW2IyM

[Roxy]

Here is it working. https://youtu.be/Iq-L2mW2IyM

Let's see it doing an M48 V4 P10 !!! This is a very elegant design. The only thing that I'm not sure about is whether I can use it. I really need to have my heat bed on springs because any firmware mistake drives the nozzle into the bed and I need a little bit of extra flex so I have time to press the reset button. I guess if my heat bed springs don't deflect as easily as the nozzle deflects, I might still be able to make it work for me.

[adamfilip]

Well my bed is completely solid. and my Gantry cant go down that far. it hits a physical limit.
if it tried to drive down.. the spring would take up the pressure.

I will try the M48 V4 P10 when I get home

[BLKKROW]

This seems very similar to the Atom 2.0 Printer:

https://www.youtube.com/watch?v=ygHrhfxhx38

It has its ABL sensor triggering in the same manner.

[adamfilip]

Yep, that printer inspired me to make this version.

[BLKKROW]

Yep, that printer inspired me to make this version.

Its a fantastic design and I am excited to hear your experiences. I have never used ABL because I always read about random issues with the servo for the arm,starting G code, etc.

So if something like this becomes popular I may try it.

[adamfilip]

Havent had a chance to really print with it yet. been testing and tweaking so many things related to the printer..
but I will very soon i hope