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Re: Geeetech-Aluminum-Prusa-I3 - 8 years ago

For a great explanation of Z wobble (or z banding, there are many names for this), take a look at this link. Essentially it boils down to the lead screw is transferring movement to the guide rods. The lead screws should be allowed to float. In this printer, the flexible coupler is supposed to allow for this but it doesn't provide enough freedom. It might be possible to enlarge the hole that const

by stratosonic - Prusa i3 and variants

Re: Geeetech-Aluminum-Prusa-I3 - 8 years ago

So I printed out bernbout's Z axis anti-wobble brackets. This totally eliminated the small Z-wobble that I was getting in my prints. Thanks bernbout! Z Axis brackets I had read a lot about eliminating Z-wobble but hadn't yet determined how I wanted to address it. This bracket fixed it for me. I know, there are probably backlash issues, etc, but the walls of prints are now amazingly smooth.

by stratosonic - Prusa i3 and variants

Re: Geeetech-Aluminum-Prusa-I3 - 8 years ago

Did You notice a reduction in Z wobble with the new rods? Is the print quality improved? I am also wondering about the pitch difference of the rods and if that affected the quality of he prints?

by stratosonic - Prusa i3 and variants

Re: Geeetech-Aluminum-Prusa-I3 - 8 years ago

The clunking is possibly your extruder stepper motor skipping steps. Do you get the clunking sound when running the extruder manually with the nozzle well above the bed? If so, this could be a clogged nozzle, not enough current to the motor, or the temperature is too low. If it occurs during the first layer of a print, then it may be your bed is too close. In Slic3r I run a layer height of 0.2m

by stratosonic - Prusa i3 and variants

Re: Geeetech-Aluminum-Prusa-I3 - 8 years ago

Thanks for the 3D models! I really like the idea of auto tramming, and the sensor is inexpensive as well. I am interested to see how it turns out for you. If it works for you I will have to give it a go as well. I usually use Sketchup as well. It is what I have always used for 3D drawing and am most comfortable with it.

by stratosonic - Prusa i3 and variants

Re: Geeetech-Aluminum-Prusa-I3 - 8 years ago

Your prints are looking great! Is that switch box on Thingiverse? What are you planning for auto bed leveling? BLTouch or something else?

by stratosonic - Prusa i3 and variants

Re: Geeetech-Aluminum-Prusa-I3 - 8 years ago

QuoteMKSA I totally disagree, the key is to have a rigid structure put on a rigid base, well adjusted axis, smooth movement. I see bed leveling to be just that, to level the bed for the minute adjustments required for initial layer adhesion and not to compensate for the preceding. Yes, I do agree that a rigid printer is key. That is why many recommend the box style frame versus the single plate

by stratosonic - Prusa i3 and variants

Re: Geeetech-Aluminum-Prusa-I3 - 8 years ago

QuoteMKSA Are the guide rods straight and of tempered steel ? Any play in the bearing ? Any mark from the bearing after some use ? Any binding ? Sorry, I don't know what material the rods are made from. Mine were not completely straight out of the box. I rolled them on a piece of plate glass and you could see a small (maybe a millimeter or 2?) gap. I did my best to straighten them. So far the r

by stratosonic - Prusa i3 and variants

Re: Geeetech-Aluminum-Prusa-I3 - 8 years ago

This is how I set my bed. It is the "Bed Left" and "Bed Front" settings in "Printer Settings" in Repetier-Host: image post This is how you can come up with these values: 1. Knowing that the print area is 200mm x 200mm, measure the bed to find the front left corner of the bed. 2. Measure how far the extruder nozzle is from this position in the X and Y directions. 3. Run a print job and adjust

by stratosonic - Prusa i3 and variants

Re: Geeetech-Aluminum-Prusa-I3 - 8 years ago

Quotebernbout First tighten the larger (cross section) screw. This squeezes the hole around the shaft to make it fit perfectly Then tighten the smaller screw. This tightens the shaft in place.with no pushing it to the side Tighten the ZMotor first then the ZAxis threaded rod. Important: When you insert the ZAxis threaded rod, into the coupling it will usually bottom out on the top of the ZMotor

by stratosonic - Prusa i3 and variants

Re: Geeetech-Aluminum-Prusa-I3 - 8 years ago

If you go to the geeetech website, they have the assembly instructions, user guide, and a link to the YouTube videos. Geetech Aluminum Prusa i3 YouTube build playlist

by stratosonic - Prusa i3 and variants

Re: Geeetech-Aluminum-Prusa-I3 - 8 years ago

Quotebernbout 1. Did Geeetech supply an SD card or do I have to use my own? No, the printer does not come with an SD card. I still haven't tried printing from an SD card with mine. I have a dedicated computer connected to the printer, so I don't have much need at this point. Quotebernbout 2. What did you do with the A.C power unit? They supplied a plug+ socket/switch but no instructions of how i

by stratosonic - Prusa i3 and variants

Re: Geeetech-Aluminum-Prusa-I3 - 8 years ago

Here are a few images of items I have printed. Sorry if it is hard to see details but it is difficult to take good pictures of the black PLA! The second and third images are of a custom fan mount and duct that I created. It ended up not working, but the prints came out nice!

by stratosonic - Prusa i3 and variants

Re: Geeetech-Aluminum-Prusa-I3 - 8 years ago

Here is the link to my review video. I had some video of parts that I have printed but the lighting and focus was really poor so I didn't include it. I will try to re-do that this weekend. Geetech Aluminum Prusa i3 Review

by stratosonic - Prusa i3 and variants

Re: Geeetech-Aluminum-Prusa-I3 - 8 years ago

I just recently purchased this printer (although from Geeetech directly via eBay). This is my first 3D printer, so I am certainly not an expert. That being said, I am successfully printing parts after a few short days. Here's a link to my unboxing video. - Geeetech Aluminum Prusa i3 Unboxing video. I am working on a full review video soon. The build was straight forward. They have both YouTube

by stratosonic - Prusa i3 and variants