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1500 questions
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Why not use GT2 en lieu of a Z-axis threaded rod or leadscrew?

Having just re-read Tom's excellent answer to my question Advantages of GT2 over a rack, as my comment ponders1: Why is a threaded rod, or lead screw, used for the Z-axis movement in a Prusa (and its derivatives) given the inherent problems relating…
Greenonline
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Prints to one side

I use Cura for creating the G-code files for my (2 1/2 year old) Prusa i3. I have to put the prints in the corner furthest from the X-Y-Z origin symbol as the machine prints in the middle of the bed. How do I remove this offset?
Phil
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1 answer

What printer should I consider for printing microfluidic channels?

I am looking to purchase a 3D printer for the fabrication of microfluidics. I am looking for a printer that can print channels with less than 200 µm cross-sections, preferably, can print optically transparent and biocompatible material, and costs…
5
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4 answers

Multiple unattended prints using extruder to sweep build plate?

I read something the other day about a guy who found a way to knock over completed prints with the printer head itself, then slide them to the edge of the build plate, where they fall into a box/basket. This allows printing several Eiffel Towers…
dandavis
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5
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1 answer

How bed leveling is achieved without table screws?

I have seen printers with table screws and bed leveling sensor and printers that have only bed leveling sensor (such as Prusa). So my question is how does the bed levelling work when there is only a sensor, and no adjustment screws? What will happen…
OrElse
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5
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5 answers

Heatbed with zones?

Waiting for a heatbed to get up to 85˚C for a relatively small part got me wondering why beds aren't hardware/G-code configurable for what area is heated? I'm sure it would be an increase in parts costs and electronics, but it seems that being able…
Gone
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5
votes
2 answers

What do you call this effect in 3D printing and how can I remove it?

I have a Bowden extruder in my printer setup. Everything works great except this effect which must be related with retraction and is generated on Z layer change: The model itself, is printed in one layer perimeter / outline shell, with 0.25 mm…
OrElse
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5
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2 answers

Underextrusion after travel moves with PETG/Colorfab XT

I came across several issues which seem to have been lowered. Firstly, I changed from a 0.4 to a 0.5 mm nozzle. Because of the backpressure I was not able to print my PETG (Colorfabb XT filament) below 270°C which caused unresolvable oozing. After…
dgrat
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5
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4 answers

Can 3D printers, such as a TronXY X1, handle 24/7 projects?

I have an incoming project and the only 3D printer available to me is the TronXY X1. So the question is: Can it handle at least four days of continuous load or should I search for an alternate solution? I don't want to damage (my only) 3D printer…
Apollyon
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5
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3 answers

Anet A8 LCD shows garbage data after done printing

I have an Anet A8, and recently updated the firmware to Marlin 1.1.8. My only change was replacing the configuration files by the Anet A8 sample files built in with the firmware zip file. Everything works fine but, sometimes, right after finishing a…
elias
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5
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1 answer

Should black high temperature ABS flow in direct sunlight?

I bought a digital sundial online and deployed it in (what else?) direct sunlight in DC in June. Within 30 minutes the gnomon started to sag and the mount started to pull away from the gnomon at the bolt. This shouldn't happen, right? Or is this…
5
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1 answer

Marlin Minimum X/Y Feedrate

I'm in a situation where I'd like to move the XY axes on my printer extremely slowly (down to 0.05 mm/s = 3 mm/min). [I'm okay with 'smooth' motion not being possible]. First off, here's the (somewhat Frankensteined) setup I'm using: I'm basically…
5
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2 answers

Steps per mm of extruder are incorrect after rebuilding

I have got a problem that after upgrading my printer to an aluminum frame my extruder went from around 400 steps per mm at 16 micro steps (which did match the manufacturer's recommendation perfectly) to a bit over 1000 steps per mm at 16 micro…
Bastian__
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5
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1 answer

Adhesion problem (heat bed or extruder issue)

I am having an issue with the transition from the first layer to the second. It seems that the first layer isn’t staying put on the hot bed and the extruder is dragging it around creating a ball of filament. Is this a "height issue" or a "hotbed…
dale
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5
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2 answers

Insulate hotend on Makerbot Smart Extruder

Simple question: how do you reinsulate the MakerBot Smart Extruders? Backstory: I work at the library. We've recently replaced the MakerBot (extruder connection issues followed by software incompatibility) with a Prusa. As a new hire, I'm obsessed…
Stacie
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