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Beacon 3D Printer

Posted by MatthewHall 
Beacon 3D Printer
January 29, 2018 06:48PM


Here's a quick shot of my workbench with completed printer. It's been a journey through three massive iterations over the course of two years but this one works like a charm.
Smoothieboard/MGN12 Rails/Misumi Extrusions

Edit: please critique.

Edited 2 time(s). Last edit at 01/29/2018 06:50PM by MatthewHall.
Re: Beacon 3D Printer
January 29, 2018 08:50PM
Be A Con...has a mad ring to it smiling smiley Didn't see any of the previous versions of this, how come you went for belt on Z, anything there to stop it falling? It needs more lights smiling smiley

Edited 1 time(s). Last edit at 01/30/2018 05:08AM by MechaBits.
Re: Beacon 3D Printer
January 29, 2018 11:47PM
Why Bowden tube? I'd think a dual mgn12 carrier would be able to handle a direct drive extruder.
Or is it the vertical tower that leans, when there's too much weight at the far end?
Re: Beacon 3D Printer
January 30, 2018 09:29AM
I really like your x-motor end, could I have the source (step or other cad)?
Re: Beacon 3D Printer
February 01, 2018 04:57AM
@FA-MAS the plan is to release all the files with instructions on Thingiverse. I'll update when that happens.

@o_lampe the bowden tube is just because that's what I had already smiling smiley

@Mecha_bits the belt drive system was preferred over a leadscrew because it's easier to mount accurately. Way easier.
Re: Beacon 3D Printer
February 01, 2018 07:02AM
Your belt arrangement on the X axis is sort of opposite what it needs to be. You've got the bottom half of the belt loop running inside the t-slot, so it is parallel to the X axis guide rail, but the top half of the loop that attaches to the extruder carriage is not parallel to the guide rail. That will result in distorted prints and varying belt tension depending on where the extruder carriage is on the X axis. The belt loop half that attaches to the extruder carriage should be parallel to the X axis linear guide. The same applies to Y and Z axes, too, which I can't see in the photos.

Do you do anything to stop the X axis from falling if power to the Z motor is cut/lost?


Son of MegaMax 3D printer: [www.instructables.com]
Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]
Re: Beacon 3D Printer
February 01, 2018 05:22PM
Quote
the_digital_dentist
Your belt arrangement on the X axis is sort of opposite what it needs to be. You've got the bottom half of the belt loop running inside the t-slot, so it is parallel to the X axis guide rail, but the top half of the loop that attaches to the extruder carriage is not parallel to the guide rail. That will result in distorted prints and varying belt tension depending on where the extruder carriage is on the X axis. The belt loop half that attaches to the extruder carriage should be parallel to the X axis linear guide. The same applies to Y and Z axes, too, which I can't see in the photos.

Do you do anything to stop the X axis from falling if power to the Z motor is cut/lost?

The X-axis is geometrically parallel I just didn't fasten the belts to the carriage in a good way. I bought a new E3D head (the one attached currently is old) and have started designing ones that will keep the belts even. It was a rush job for sure.
The Z-axis just slams down if I cut the power lol but I did design it so the extruder can rest without touching the bed while it's off.
Re: Beacon 3D Printer
February 02, 2018 01:47AM
MGEN and extrusions would be better used to build a better kinematic, CoreXY , various X bot.

Put a dial at the end of the X arm and apply let's say 1N. See how much it flexes,to be done in Y and Z.

Edited 1 time(s). Last edit at 02/02/2018 01:47AM by MKSA.

"You failed to maintain your weapon, son" (Harry Brown )
Re: Beacon 3D Printer
February 06, 2018 12:55PM
I really like the cantilever design, If you look for something to stop your head crashing into the bed, I would suggest you to watch closely the Cetus 3d, they realeased a printed part that goes on the Z axe to prevent this...

Looking forward to see the files one thingiverse... And build one ?
Re: Beacon 3D Printer
February 12, 2018 02:03AM
If there is droop in the X, perhaps you can simply adjust the X slightly upwards at the free end to compensate.
You might need to put an adjustment screw in the mounting so you can adjust controlled, but it would work.
Looks like a nice machine! Congrats.


Lykle
________________________________________________

Co-creator of the Zesty Nimble, worlds lightest Direct Drive extruder.
[zesty.tech]
Re: Beacon 3D Printer
February 12, 2018 10:44AM
Quote
Archiclem
I really like the cantilever design, If you look for something to stop your head crashing into the bed, I would suggest you to watch closely the Cetus 3d, they realeased a printed part that goes on the Z axe to prevent this...

Looking forward to see the files one thingiverse... And build one ?

Haha yeah once I started working on my design I found the Cetus printer. They are quite similar. I might add a component like that to stop the Z from falling.

Currently working on the final CAD file update to print, test, and release on Thingiverse.
Re: Beacon 3D Printer
February 12, 2018 12:59PM
When do you think you would release these files ? Keep up the good work...
Re: Beacon 3D Printer
February 16, 2018 04:48AM
Quote
Archiclem
When do you think you would release these files ? Keep up the good work...

Well... the CAD is almost complete so probably this weekend I'll start printing parts to test than hopefully I'll upload them. I want to do it right the first time, so I'll wait until I've tested them all.
Re: Beacon 3D Printer
February 16, 2018 01:21PM
So as it is close to the first release, How are you gonna handle the position of the electronic and power supply ? Cable management and heated bed ? And, why a Dual Z rail, one would be sufficient ?

I think I will build one as soon as it is available smiling smiley

P.S. How do you ensure the belt are evenly tensioned ?

Edited 1 time(s). Last edit at 02/16/2018 01:22PM by Archiclem.
Re: Beacon 3D Printer
February 22, 2018 03:56AM
I was wondering how/why you decided to stagger the carriages on Z probably a good choice, more support, easier to fit, better for your 2020, I cant remember why i decided to put mine inline, probably to save on Z height, and probably because I was just thinking linear, straight lines....
,
Re: Beacon 3D Printer
February 22, 2018 04:55AM
Quote
MechaBits
I was wondering how/why you decided to stagger the carriages on Z probably a good choice, more support, easier to fit, better for your 2020, I cant remember why i decided to put mine inline, probably to save on Z height, and probably because I was just thinking linear, straight lines....
,

Basically cause they wouldn't fit next to each other on the 2040 rails lol.
Re: Beacon 3D Printer
February 22, 2018 04:56AM
Quote
Archiclem
So as it is close to the first release, How are you gonna handle the position of the electronic and power supply ? Cable management and heated bed ? And, why a Dual Z rail, one would be sufficient ?

I think I will build one as soon as it is available smiling smiley

P.S. How do you ensure the belt are evenly tensioned ?

Electronics will be located under the bed. Glad to see such interest! It should be a relatively inexpensive build because it will work with any electronics setup and the extraneous cost is the MGN12 rails.

I don't think belt tensions is as crucial as it is on say, CoreXY because each axis runs independently.

Edited 1 time(s). Last edit at 02/22/2018 04:58AM by MatthewHall.
Re: Beacon 3D Printer
February 22, 2018 11:37AM
Quote
MatthewHall
Quote
MechaBits
I was wondering how/why you decided to stagger the carriages on Z probably a good choice, more support, easier to fit, better for your 2020, I cant remember why i decided to put mine inline, probably to save on Z height, and probably because I was just thinking linear, straight lines....
,

Basically cause they wouldn't fit next to each other on the 2040 rails lol.

I knew there had to be a reason smiling smiley
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