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Custom Smartrapcore ALU

Posted by s0me 
Custom Smartrapcore ALU
December 30, 2015 12:19PM
Hi,

This is my version of the Smartrapcore Alu

Parts used for this build:

- TR8x8 leadscrew with anti backlash nut
- flexible coupling
- F624ZZ bearings (instead of 608ZZ)
- 16 tooth GT2 pulleys
- 0.9 step angle / 400 steps Nema 17 motors for XY
- 1.8 step angle / 200 steps Nema 17 motors for Z / E
- J-head clone 0.5mm nozzle / 1.75mm filament
- Ramps 1.4 + LCD
- Mk3 aluminium heatbed + borosilicate glass plate + SSR
- 8mm linear rods + selflubricating bronze bushings
-12mm linear rods + bearings for Z axis
- Wade extruder (bowden)
- laptop style 12v 10A PSU


The Z axis design is "borrowed" from the G&C printer but it uses more printed parts, different aluminium extrusion lenghts and the motor is mounted at the bottom. Because of this I used 360mm vertical extrusions.
The MK3 heatbed sits on top of a 3mm Dibond plate.
The plan is to use a IR probe (from dc42) for auto bed leveling but for the moment the build plate will be manually leveled because I use it on another printer.
Currently the plastic parts are printed in PLA but will be reprinted in ABS after I wire the heatbed and make some minor.
The only plastic parts that are not modified are the motor mounts with their rod holders.

It will be upgraded with the following parts: 24v power supply, 24v Arduino Mega / Duet (which is intended for a Rostock mini but...), E3D V6 hotend, 24v fans

Cable management is a mess at the moment, I just wanted to see how it works. I will post pictures of the print quality after I fine tune the extruder.

Any suggestions?












Edited 2 time(s). Last edit at 12/30/2015 02:22PM by s0me.
Re: Custom Smartrapcore ALU
January 10, 2016 05:49AM
Looks good would you mind sharing your z axis stl's, I'm waiting on a smartrapcore alu and think the z axis will be the first thing needing upgrading.
Re: Custom Smartrapcore ALU
January 16, 2016 07:54AM
I didnt test it yet so its still a work in progress.

The vertical aluminium extrusions of the frame are 360mm long (original SMC Alu 300mm).

Extrusions:
2060 x 192mm
2020 x 250mm x 2
Screws&nuts
M4x25mm x 16 + 16 t-nuts
M4x20mm x 2 + 2 nuts

Here is the onshape link: Z axis corexy
STL files and a dxf file attached.
Attachments:
open | download - z axis.rar (143.6 KB)
Re: Custom Smartrapcore ALU
February 12, 2016 01:55PM
What is your extruder?
Re: Custom Smartrapcore ALU
February 13, 2016 05:56AM
Wade extruder with bowden coupler
Re: Custom Smartrapcore ALU
March 09, 2016 08:51AM
Thanks for sharing your build! I'm looking at upgrading (and silencing) my ALU. It looks like you modified your idler and x carriage to account for the flanged bearings would you happen to have those files? If not what did you use for source files, the OnShape machine files?

Machine looks great!
Re: Custom Smartrapcore ALU
March 09, 2016 10:23AM
Yes I modified the onshape files. Here is the link but the assembly and the edited parts are a mess: SCALU Custom

The parts need adjustments because the belts are really close to the XY parts and may rub at the home and the end of the x axis. Another thing that I dont like is the smoothrod fixing method for the X axis.

I ordered some T-slot wheels to convert it and use the extra space to mount 2 cooling fans on the sides of the hotend + direct drive extruder. I'll post pictures in the COREXY subforum next week I hope.
Re: Custom Smartrapcore ALU
March 12, 2016 11:24AM
Your belt pulleys are these something new or different or just the standard scalu bearings without the printed sleeves? If so how do the belts run? I assumed the sleeves were needed to keep the belts on given the crossovers/angles.
Re: Custom Smartrapcore ALU
March 12, 2016 11:31AM
No, flanged bearings F624ZZ. You could replace yours with F608ZZ + a big washer and get rid of those printed sleeves.

Edited 1 time(s). Last edit at 03/12/2016 11:33AM by s0me.
Re: Custom Smartrapcore ALU
April 27, 2016 07:50AM



Converting the Smartrapcore Alu to Biguide wheels on T-slot
Re: Custom Smartrapcore ALU
April 27, 2016 10:27AM
Quote
s0me
No, flanged bearings F624ZZ. You could replace yours with F608ZZ + a big washer and get rid of those printed sleeves.

Have you done this on your smartrapcore? I tried it and the f608zz bearings were not wide enough for the belts to ride nicely on even with washers, and the belts rubbed on the x carriage.

I'd say you want a larger bearing both in terms of outside diameter and width.

Edited 1 time(s). Last edit at 04/27/2016 10:28AM by DjDemonD.


Simon.

[www.precisionpiezo.co.uk] Accurate, repeatable, versatile z-probe plus piezo discs, endstop cables, pt100, 50w heaters. PT1000 cartridge sensors plug straight into duet boards and others.
Published:Inventions
Re: Custom Smartrapcore ALU
April 27, 2016 12:14PM
I used the F608ZZ as an idler on my P3Steel's Y axis, it worked fine but I switched to F624ZZ.

Never used it on the Smartrapcore which only printed calibration parts.

I'll create another topic in the Corexy subforum after I finish the conversion. spinning smiley sticking its tongue out
Re: Custom Smartrapcore ALU
April 30, 2016 03:36PM
Did you do the upgrade ? I'm interested !
Did you gain some build volume ? You could put the motors outside the frame, the bearings on top of the carriage , maybe even arriving at 300x250 or something ... this could mean the birth of smartrapcore alu 2.0
Also how is your z-axis working ?

Edited 3 time(s). Last edit at 04/30/2016 03:43PM by Gibbon91.
Re: Custom Smartrapcore ALU
May 01, 2016 06:45AM
I have to desgn the x carriage, hotend mount, cooling fan mount, endstop holder for Y axis.

I'm not looking to gain print volume with this printer.

The Z axis seems to work fine, no visible Z wobble effect / banding.


Re: Custom Smartrapcore ALU
May 01, 2016 08:46AM
Wow, that's so cool !
Maybe i'm wrong but from your photo it seems that your y axis is not parallel to the frame ...
Re: Custom Smartrapcore ALU
May 01, 2016 09:04AM
I think you mean the X axis. It needs belt tension.
Re: Custom Smartrapcore ALU
May 02, 2016 04:33AM
yeah, i meant x axis, well it doesn't seem difficult your upgrade, maybe i'll do it too, but changing the 2 axis with v-slot aluminum extruded (profile ? beam? how do you call this things in english), that would mean spending like 20 €, but i think it might be worth it ...

Edited 1 time(s). Last edit at 05/02/2016 04:34AM by Gibbon91.
Re: Custom Smartrapcore ALU
May 02, 2016 04:48AM
You can use aluminium gantry plates with V-slot, no need for plastic parts besides the hotend mount (maybe X carriage too?).
I can't use V-slot with my corners because the T-slot has a 6mm center hole.



Need to redesign the belt clamps or the whole X carriage.

Belt tensioning is done via the idlers.
Re: Custom Smartrapcore ALU
May 02, 2016 04:58AM
Oh, so it will need specific corners, i see ....
Well, let us know if this inprovement is worth it !
Re: Custom Smartrapcore ALU
May 18, 2016 08:02AM
I need the stl file for the hotend holder please
Re: Custom Smartrapcore ALU
May 29, 2016 02:36PM
ok i made a hotend holder for e3d hotend
kindly review it and send me your feedback (i am a total noob in 3d modeling)
Attachments:
open | download - hotend.stl (125.6 KB)
open | download - hotend.ipt (239.5 KB)
Re: Custom Smartrapcore ALU
May 29, 2016 04:05PM
Looks cool but the standard hot end mount will take a v6, when I tried one I had to take the endstop off the bottom of the x carriage and relocate it to the y slide on
the left, but it fits into the groove mount.

Edited 1 time(s). Last edit at 05/29/2016 04:06PM by DjDemonD.


Simon.

[www.precisionpiezo.co.uk] Accurate, repeatable, versatile z-probe plus piezo discs, endstop cables, pt100, 50w heaters. PT1000 cartridge sensors plug straight into duet boards and others.
Published:Inventions
Re: Custom Smartrapcore ALU
May 30, 2016 10:21PM
This was what I ended up changing for an E3D V6 hotend. It was just taking the same part in Onshape and sliding the offset down and adding a few extra cutouts for screw clearances. This brought my hotend down below the microswitch about 8-10mm which gave me the comfortable feeling I wouldn't cook the microswitch on the hotbed.
Attachments:
open | download - modified adaptor jhead.stl (364.4 KB)
Re: Custom Smartrapcore ALU
June 01, 2016 03:29AM
Quote
Yoko
ok i made a hotend holder for e3d hotend
kindly review it and send me your feedback (i am a total noob in 3d modeling)

Already told you in a private message that I don't own an E3D hotend for this printer.

I don't even own a "Smartrapcore" anymore. My design is not compatible with the Smartrapcore anyway.


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