3D Printing Stack Exchange
3D Printing Stack Exchange

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1500 questions
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3 answers

Tetrahedral honeycomb?

I have an idea for a 3D printed project, but I'm a total noob in this area and need someone to reality check it for me. Basically what I want to do is a tricopter frame made of a tetrahedral honeycomb. The whole model would be within 30 * 30 * 10…
cube
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Is there a lubricant that can be used for linear bearings, bronze sinter bushings and threaded rods alike?

My printer will feature LM8UU bearings/threaded rods for the z-axis and bronze sinter bushings on the x- and y-Axis. As also, but not only, written here http://reprap.org/wiki/Lubrication, I know that one should: - use machine oil for sinter…
kamuro
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Prusa XI3 Extruder Calibration

I have done the calibration for the x, y, and z axis and everything works fine there. However when I went to do the calibration for extruder things got a little weird. The original number programmed on the board for the step per mm was 98 When I did…
Dakota Miller
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Underextrusion after long travels

I'm having problems when printing small parts over big areas. I'm currently printing quite big casing (~180 mm x 100 mm), which has hexagonal holes on the corners. On the first layer the printer prints, in order: Supports inside the holes, Borders…
Spook
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"Seams" in first layer

My first layers started to have these "seams" in them. I am printing on the Anycubic Ultrabase. Any other layer is fine. Has anyone else experienced similar problems or an idea of how to debug this issue? The picture is of PLA (BQ Easy Black)…
AntiHeadshot
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Safely Hooking a Switch up to an OEM Power Supply?

I ordered an OEM Power Supply and I intend to hook up with this rocker switch I believe it's like the one specified in the Power Supply Documentation which reads: In the US, IEC320 C14 plug connections are common, but use your preferred…
leeand00
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PLA 3D Print longevity after being printed

I am curious about the longevity of a PLA printed part used in a commercial application. It would be a mounting bracket installed in an industrial enclosure. The internal cabinet temperature would be less than 100 °F, and have an internal air…
Jcfry
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How does a UV LCD 3D resin printer work?

I've been wondering this for a while, and have searched for hours and have found nothing except undetailed explanations and projects. How does a UV LCD 3D resin printer cure resin exactly? I understand there is an LCD screen, but where does the UV…
1Ghasthunter1
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What is the reinforcement for 3D printing concrete cement?

When houses are printed with concrete cement what replaces the steel rebar for reinforcement? Here's a link referencing printing concrete: https://www.aniwaa.com/house-3d-printer-construction/ House 3D printers use extrusion technology. Some…
Perry Webb
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Strange outer skin print quality on Ender 3

Does anybody have an idea what causes the strange outer wall skin texture? I don't know why this happens; the inner wall looks fine, but the outer wall looks distorted. Also it's strange that the distortion only happens on the left side for about…
Julian
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What is the correct process to make a correct resin casting for jewelry?

I have a 3D printer and I have printed some models with castable resin. When I burn one of these models in the oven and then do the metal casting, the surface of the metal piece is not smooth. I did a test with a pan. I put a model of wax and a…
Adrián Juárez
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Can I dry PETG filament under sun?

At the moment the outside surface temperature is around 30 °C. Can I put my PETG spools outside with a fan in order to dry them cheaply?
Fredo Corleone
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Why is 2 / -2 / 2 equal to -2 in OpenSCAD? (Mathematical Order of Operations)

Recently I have been doing more complicated math in OpenSCAD and I have run into something that I find strange. Take a simple math expression: 2 / 2 / 2. By any programming language this will equal 0.5 (1/2), and OpenSCAD agrees. Something like…
Elijah
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1 answer

How do I calibrate temperature control in a Repetier firmware?

I have built a 3D printer using RAMPS 1.4. I am trying to raise the hotend temperature over 180 °C. But I can hardly get to 100 °C in 60 minutes. I applied power directly to the heater and I was able to get to 220 °C in about 15 minutes. What am I…
Avel Maro
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Why does the print speed change at specific height? (Using Ultimaker Cura slicer)

I'm trying to figure out why the print speed changes at one point in this model. I'm using Ultimaker Cura 3.6 and, as shown in the picture, I set the speed to be the same across the entire print. Is there a setting I'm missing? 0scar is right.…
guidout
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