Smartrap X End Mount for J-Head Light Hotend
Posted by markstephen
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Smartrap X End Mount for J-Head Light Hotend April 16, 2014 01:44PM |
As mentioned in another thread, I have started on the design of a mount for the Ohio Plastics J-head Light. The STL mesh files along with the parametric CAD files (FreeCAD .fcstd format) are now posted on Thingiverse.
As noted, these parts have not been printed as I type and are unproven. It is therefor the purpose of this thread to document the development / refinement of the part and to come up with a working design. It may very well be that it will work "out of the box" but if anyone decides to print one and finds any flaws, please report back here so the mount can be improved.
It should be noted that the J-Head light has slightly different mounting dimensions than a standard J-Head. An adjustment in the radius for the OD and the grove OD of the barrel will need to be made to work with a standard J-head.
Mark
Again, the files can be found here -
[www.thingiverse.com]
As noted, these parts have not been printed as I type and are unproven. It is therefor the purpose of this thread to document the development / refinement of the part and to come up with a working design. It may very well be that it will work "out of the box" but if anyone decides to print one and finds any flaws, please report back here so the mount can be improved.
It should be noted that the J-Head light has slightly different mounting dimensions than a standard J-Head. An adjustment in the radius for the OD and the grove OD of the barrel will need to be made to work with a standard J-head.
Mark
Again, the files can be found here -
[www.thingiverse.com]
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Re: Smartrap X End Mount for J-Head Light Hotend April 16, 2014 05:59PM |
Quote
madmike8
I'm going to try and print it tonight. Thanks Mark
Sure thing. Sense I'm new to 3D printers, watch the screw hole diameters and let me know if they need to be adjusted or if I need to add captures for nuts and the like. I currently am thinking that the screws should just thread in to the holes. Maybe start off with the New_jhead_X part first and test the screws in the holes. If their off, let me know and I'll make the adjustments and get the fixed files up right away. It's a simple thing to do with the CAD. Just enter a new constraint for the radius and run it through the mesh generator. If you didn't notice, those parts were meshed using a fine Mefisto mesh before being exported to .stl.
Mark
Screenshot showing Mefisto mesh pattern.
Edited 2 time(s). Last edit at 04/16/2014 06:05PM by markstephen.
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Re: Smartrap X End Mount for J-Head Light Hotend April 16, 2014 10:21PM |
Everything looks good. M3 screws thread in and the 8mm Rod presses in tightly.
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Re: Smartrap X End Mount for J-Head Light Hotend April 16, 2014 11:08PM |
Done! Yeah... Guess I will have to drill a hole for the belt, but that's pretty easy.
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Re: Smartrap X End Mount for J-Head Light Hotend April 17, 2014 12:30AM |
That just looks fantastic. I just uploaded new, New_jhead_X.stl and New_jhead_X.fcstd files that include 2 holes to tie the string through AND provided a slot for a tystrap that should give clearance for the arm to move freely so long as the tystrap is not to thick... gave it 2.75 mm... so it should work OK.
Mark
Mark
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Re: Smartrap X End Mount for J-Head Light Hotend April 17, 2014 01:38AM |
great job.
mad mike was faster than me i see
I need print it and adapt for standard j-head ? so, if it's ok , i can update thingiverse with let version-no-servo . We will have our j-head model, thx to Mark
the Smartrap project
[smartfriendz.com]
[www.thingiverse.com]
[reprap.org]
[github.com]
doc assemblage: [reprap.org]
NEW: Forum smartfriendz: [smartraptalk.smartfriendz.com]
mad mike was faster than me i see
I need print it and adapt for standard j-head ? so, if it's ok , i can update thingiverse with let version-no-servo . We will have our j-head model, thx to Mark
the Smartrap project
[smartfriendz.com]
[www.thingiverse.com]
[reprap.org]
[github.com]
doc assemblage: [reprap.org]
NEW: Forum smartfriendz: [smartraptalk.smartfriendz.com]
|
Re: Smartrap X End Mount for J-Head Light Hotend April 17, 2014 04:53AM |
Hi Mark,
We do have time no hurry here.
Now i get free cad on my imac working well, thx to you
learning learning...
the Smartrap project
[smartfriendz.com]
[www.thingiverse.com]
[reprap.org]
[github.com]
doc assemblage: [reprap.org]
NEW: Forum smartfriendz: [smartraptalk.smartfriendz.com]
We do have time
no hurry here.Now i get free cad on my imac working well, thx to you
learning learning...
the Smartrap project
[smartfriendz.com]
[www.thingiverse.com]
[reprap.org]
[github.com]
doc assemblage: [reprap.org]
NEW: Forum smartfriendz: [smartraptalk.smartfriendz.com]
|
Re: Smartrap X End Mount for J-Head Light Hotend April 17, 2014 02:03PM |
OK, got the arms and retainer that should work for the MK5 J-Head hotend. I did 2 versions of the arm, one for use with a push connect fitting and one for the use of a nut to hold the Bowden tube. I do not have one of these J-Heads, so use at your own risk. From what I can tell, they should work. Files are added to the Smartrap X End Mount For J-Head Light and MK5 repo on Thingiverse.
Mark
Mark
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Re: Smartrap X End Mount for J-Head Light Hotend April 22, 2014 03:06PM |
Almost there... Got the parts printed out, and made a couple of little changes, (I'll post them up on Thingiverse later on today). Have everything mounted and now I am stuck!
I can not seem to get the settings of the Z offset to work. when I give it the G29 command, it goes through it's probing just fine until the last probe. The z does not lift on it's move to start the print. The nozzle is drug across the plate until it reaches the beginning of the print then it lifts. Has anyone seen this? Any idea how to fix it?
Anyway, sense everyone likes to see pictures, here are a few more
Mark
Printed parts with the current mods...
Added the fan mount for a 30mm fan to keep the mount and top of J-head cool.
Well, every fan needs a fan guard, so why not print one with my Spyderbreath logo.
It is the same spider that is on the custom boot screen.
All mounted and ready to go... Almost... once i can get the thing to stop draging the nozzle across the plate.
Edited 1 time(s). Last edit at 04/22/2014 03:09PM by markstephen.
I can not seem to get the settings of the Z offset to work. when I give it the G29 command, it goes through it's probing just fine until the last probe. The z does not lift on it's move to start the print. The nozzle is drug across the plate until it reaches the beginning of the print then it lifts. Has anyone seen this? Any idea how to fix it?
Anyway, sense everyone likes to see pictures, here are a few more
Mark
Printed parts with the current mods...
Added the fan mount for a 30mm fan to keep the mount and top of J-head cool.
Well, every fan needs a fan guard, so why not print one with my Spyderbreath logo.
It is the same spider that is on the custom boot screen.
All mounted and ready to go... Almost... once i can get the thing to stop draging the nozzle across the plate.
Edited 1 time(s). Last edit at 04/22/2014 03:09PM by markstephen.
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Re: Smartrap X End Mount for J-Head Light Hotend April 24, 2014 04:11AM |
OK, just got the new versions up on Thingiverse. You can check them out there. Haven't uploaded the CAD files, but I'll get them as soon as I get them cleaned up. The Left hand model works a treat!
One of my fellow FreeCADers has written a nice CuraEngine plugin for FreeCAD and for now, has what looks to be the last bug out of it. So I modeled up a fan duct to keep the air off the hot side of the hotend, clicked on the plugin, produced the Gcode and printed. nice to only have to have one piece of software open to design and print something.
Anyway, here's a pic of that still stuck to the glass and the new Left hand X mount on my Smartrap. All I need now is to go into town and pick up a grub screw so the head won't have to travel as far to trip the switch.
Mark
Notice how straight it is... and all but hidden underneath is the bushing I printed to replace a bad bearing. Working great.
Now we can do some printing.
Left Arm and mount.
One of my fellow FreeCADers has written a nice CuraEngine plugin for FreeCAD and for now, has what looks to be the last bug out of it. So I modeled up a fan duct to keep the air off the hot side of the hotend, clicked on the plugin, produced the Gcode and printed. nice to only have to have one piece of software open to design and print something.
Anyway, here's a pic of that still stuck to the glass and the new Left hand X mount on my Smartrap. All I need now is to go into town and pick up a grub screw so the head won't have to travel as far to trip the switch.
Mark
Notice how straight it is... and all but hidden underneath is the bushing I printed to replace a bad bearing. Working great.
Now we can do some printing.
Left Arm and mount.
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Re: Smartrap X End Mount for J-Head Light Hotend April 24, 2014 04:24AM |
No mark, the code you saw here is for slic3r config and it's payed each print ( probe 3 points, then go up a little to prevent to scratch the glass, then go back to 10,10 then start print). The all process takes 30 secondes, which is not long compared to a full print ? ( mine are around 1 to 2 hours long usually as i print Smartrap plates).
Congrats for the j-head model. it's really cool. I will point to it in thingiverse when i update ? so people have a way to use the last version ( no servo) with j-head .
You save me lot of design time..that's so good thx again
the Smartrap project
[smartfriendz.com]
[www.thingiverse.com]
[reprap.org]
[github.com]
doc assemblage: [reprap.org]
NEW: Forum smartfriendz: [smartraptalk.smartfriendz.com]
Congrats for the j-head model. it's really cool. I will point to it in thingiverse when i update ? so people have a way to use the last version ( no servo) with j-head .
You save me lot of design time..that's so good
thx againthe Smartrap project
[smartfriendz.com]
[www.thingiverse.com]
[reprap.org]
[github.com]
doc assemblage: [reprap.org]
NEW: Forum smartfriendz: [smartraptalk.smartfriendz.com]
|
Re: Smartrap X End Mount for J-Head Light Hotend April 27, 2014 01:19AM |
Uploaded a video showing the J-Head No Servo mount is action.
Still haven't got the mirroe problem worked out. Last attempt at it, must of done something real wrong because I ended up having to start over from scratch to get the machine running again.
Maybe I'll make another run at it tomorrow. It really shouldn't be this hard.
Mark
Still haven't got the mirroe problem worked out. Last attempt at it, must of done something real wrong because I ended up having to start over from scratch to get the machine running again.
Maybe I'll make another run at it tomorrow. It really shouldn't be this hard. Mark
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Re: Smartrap X End Mount for J-Head Light Hotend April 27, 2014 06:48AM |
Cool video indeed Mark
I will update really soon on thingiverse now. Thx again. i will just link to your model for the j-head version ! congrats
It's funny to see how close and clones are our smartraps . haha. Same look, same noise, funny
the Smartrap project
[smartfriendz.com]
[www.thingiverse.com]
[reprap.org]
[github.com]
doc assemblage: [reprap.org]
NEW: Forum smartfriendz: [smartraptalk.smartfriendz.com]
I will update really soon on thingiverse now. Thx again. i will just link to your model for the j-head version ! congrats
It's funny to see how close and clones are our smartraps . haha. Same look, same noise, funny
the Smartrap project
[smartfriendz.com]
[www.thingiverse.com]
[reprap.org]
[github.com]
doc assemblage: [reprap.org]
NEW: Forum smartfriendz: [smartraptalk.smartfriendz.com]
|
Re: Smartrap X End Mount for J-Head Light Hotend April 29, 2014 01:43AM |
Just did a new update to the Right and left J-Head Light Arm. I made the fingers a little longer and wider / a bit more robust as the orignal was just a bit off if the print was not perfict. So with error on the side of caution as soon as I'm done typing here, I'll be uploading the updates to Thingiverse. I think you can see what was done by comparing the new version below to the second pic in this post.
Mark
Mark
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