It's Alive! I still need to install the X-min end stop and wire the

3D Printing
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1

It’s Alive!

I still need to install the X-min end stop and wire the hotend/thermister back to the azteeg X3. But it’s getting close. Motion is smooth as can be. I will soon see how fast it can push it before I have to worry about the racking everyone mentions due to the h-bot design. But all in all I am very happy.

Configuring Marlin for an H-bot took a while to figure out. Mostly I struggled getting X positive in the correct direction. It is not as easy as one might think because there is no specific X and Y stepper since they run together. I ended up having to flip the wires on the board and invert both steppers in the configuration.h file. You cannot just invert one stepper or in Marlin with corexy or the end stop doesn’t work (or at least it didn’t for me)

My aluminum x/y plate and build platform plate will be here Tuesday. I say another week or so and I will be rocking some prints.

On a side note does anyone know why repetier host is still stopping my motion at 200mm? I input into Marlin what my usable travel was.

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Sweet! Now make it go really fast! :smiley:

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You need to tell repetier how big your volume is too. In printer settings I think.

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Sweet. Looks good. What is your dimensions?

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Now I feel like an idiot. Usable Area Settings are right there under Config/Printer Settings. :slight_smile:

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@Daniel_Fielding outside is 24"x24"x24".Print Area somewhere around 13.6"x11.6"x12". I could get more print area but I wanted every component to fit within the 24" cube so enclosing it is trivial.

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@Eclsnowman get used to that feeling, I have it about once a day.

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hi you got files for printed parts ?

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Excellent, thanks for posting your experiences with core xy config.I still haven’t worked at all on my design with the holidays coming and all

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Is that X carriage acrylic part cut with a laser or a CNC?

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Just watched the video, excellent packaging job!

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@Karan_Chaphekar I posted the files a while back. Some will require changes. I will repost soon.

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@Michael_Moskie acrylic, but cut freehand with a rotozip for now. It is a temporary/prototype piece. My final design is dual extruder and only 3 bearings.

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Any link for files? And how you fix rods to acrylic? Do they fit tight and remain that way?

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@Karan_Chaphekar what format do you prefer? I made the models in solidworks 2013.

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@Karan_Chaphekar here is the links to my files from the old post. Again I have made changes since then… But they are very close.

Sketchup: https://drive.google.com/file/d/0B1rU7sHY9d8qWEphdmZHYUZSTkE/edit?usp=sharing

PDF (3d): https://drive.google.com/file/d/0B1rU7sHY9d8qQjIwdVhGN3BYcm8/edit?usp=sharing

Rhino: https://drive.google.com/file/d/0B1rU7sHY9d8qYldmZ2I5RFc1ZGM/edit?usp=sharing

Edrawings: https://drive.google.com/file/d/0B1rU7sHY9d8qaVVWdUR5UG14dG8/edit?usp=sharing

Step: https://drive.google.com/file/d/0B1rU7sHY9d8qLWd5NWZLS3YzWlk/edit?usp=sharing

Solidworks Assembly: https://drive.google.com/file/d/0B1rU7sHY9d8qbUFncDV2Q3pvVmM/edit?usp=sharing

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hi i use inventor so stp should work

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The STEP assembly opened fine in FreeCAD (took a little while to load). LOL at the NEMA 17 level of detail! That’s very fine detailed CAD work.

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@Normand_Chamberland that nema 17 model is actually from grabcad. I cannot take credit for that one.