Xnaron Printable Magnetic u-joint option for Rostock Max

[CosplayEngineer]

Because there are too many Yoda's...

DSC01050.jpg

Printed at 200mm/s in 45min. It is 100mm high.

..all I want is to be able to print out a good bridge. Wow.

[bplemmons]

http://store.kysanelectronics.com/servl ... -C6/Detail


Is this the right stepper for the extruder upgrade?

thanks

Bill

[xnaron]

Wow, that extruder looks amazing. you are really taking the Rostock to a new level..

Can you share your source for the stepper?

Thanks for sharing your amazing upgrades!!

Bill

All the details are on the first page of this thread

[xnaron]

Xnaron: Would it be possible for you to post the squirrel cage fan mounts that you created to hold those squirrel cage fans
you are using?

oops I missed this one in my PM's. The fan mount was from os1r1s. I have asked him to share it. He is going to put it on his github. I will remind him again As soon as he does I will link it on the first page.

[xnaron]

Because there are too many Yoda's...

DSC01050.jpg

Printed at 200mm/s in 45min. It is 100mm high.

..all I want is to be able to print out a good bridge. Wow.

with bridging it is important that you have your flow rate and nozzle size specified correctly. I always go about 10% higher for nozzle size (extrusion width). So for 0.5mm nozzle I specify it as 0.55mm. Just for fun try setting your extrusion width to 0.7mm and see how that affects your bridging.

[xnaron]

http://store.kysanelectronics.com/servl ... -C6/Detail


Is this the right stepper for the extruder upgrade?

thanks

Bill

I have the link to the stepper on the first page in the Bowden Extruder category.

[Eaglezsoar]

Xnaron: Would it be possible for you to post the squirrel cage fan mounts that you created to hold those squirrel cage fans
you are using?

[Broose]

Xnaron- What is the inside diameter the boom end supposed to be? I seem to have an XY scaling problem, or part of it may be shrinkage of ABS. My ID came out to .362 in. and I would think it should be closer to .375 in. I can't fit the magnets in without drilling first, and that creates an issue with the bottom of the hole.

[Broose]

Xnaron: Would it be possible for you to post the squirrel cage fan mounts that you created to hold those squirrel cage fans
you are using?

Is this it?
https://github.com/os1r1s-/misc-parts/b ... ductv2.stl

[Eaglezsoar]

Xnaron: Would it be possible for you to post the squirrel cage fan mounts that you created to hold those squirrel cage fans
you are using?

Is this it?
https://github.com/os1r1s-/misc-parts/b ... ductv2.stl

Yes that is it!
Thanks to Xnaron for posting it, and thanks to Broose for finding it!
That's not even under Xnaron's files, how did you find it? Great Job!

[xnaron]

Here is the os1r1s fan mount that I used https://github.com/os1r1s-/misc-parts

[cambo3d]

I milled out xnaron's heat shield from aluminum as a favor to another member for helping me out. here's what it looks like before clean up.

[bplemmons]

Wow, those are awesome, He is a lucky guy.....

[cambo3d]

lol, you only get one. the other is mine.

[bplemmons]

How come you have to use 6 arms with deltas? Wouldn't 3 (magnetic) arms do the job?


Bill

[ApacheXMD]

While three arms and thus three points would define the plane of the effector (print platform), I would think that with only three arms, the effector would still tend to rotate about the vertical axis.

[Polygonhell]

How come you have to use 6 arms with deltas? Wouldn't 3 (magnetic) arms do the job?


Bill

You could use just 3 arms if the joint you used made it impossible for the arm to rotate relative to the tower and relative to the platform in practice it's hard to get enough rotational stiffness with a single arm, so pairs are used.

[bplemmons]

That makes a lot of sense, Thanks

[xnaron]

I wanted to be able to print at a finer resolution so I built a 0.35mm J-head effector for the Magnarms. This one has a 30W heater cartridge. I turned retraction down from 4.5mm to 2.5mm. The results are amazing.

[cambo3d]

Xnaron,

You wouldn't have a dxf file of the effector mount would you. I want to mill one out of aluminum instead of the printed parts. I drew one up base on your photos/stls but i dont think its correct.

[Eaglezsoar]

Xnaron,

You wouldn't have a dxf file of the effector mount would you. I want to mill one out of aluminum instead of the printed parts. I drew one up base on your photos/stls but i dont think its correct.

If you are able to fabricate the effector from aluminum, I would be interested in two.
I would be interested in aluminum cheapskate mounts also.

[Broose]

Make sure you get a good connection with jb welding the 3mm cap screw to the ball bearing. I had one come off during a print. I had properly prepped the ball bearing and screw with acetone and cured under a lamp.

No damage, but a mess of a print. In repairing it, I was able to use 320 grit sandpaper to sand through or at least abrade the section of the chrome surface of the ball where the cap screw is attached. I am hoping that will make for a better connection.

[xnaron]

Retraction nailed!

[cambo3d]

im gonna try without bending first, looks like there might be room.

[Broose]

im gonna try without bending first, looks like there might be room.

It looks like the only problem would be if a cheapskate dropped below the effector, which shouldn't happen under normal use.