21 votes
Accepted

What are the pros and cons of collecting parts yourself, versus getting a DIY kit and then modifying it?

From a general point of view, there are a few things to consider. If you buy a kit: Pros: You get some insurance that you have all the parts that you need to get a functional printer - all the ...
user avatar
16 votes
Accepted

Are there practical reasons to NOT use a stepper motor with lead screw for the X and or Y axes?

I am going to answer this as someone who actually did rework their Prusa i3 fleabay clone to use leadscrews for all axes. Before digging into the matter, the backlash issue can be solved easily with ...
user avatar
  • 876
11 votes
Accepted

Would 3D printing multiple copies at once saves time?

Actually no. It will take slightly more for each addition. You also then have the point of failure, where one gets knocked off and ruins all the prints. The fastest way to print multiple objects is ...
user avatar
  • 3,003
10 votes

What are the pros and cons of collecting parts yourself, versus getting a DIY kit and then modifying it?

I built my first printer from scratch, though it's fairly similar to an oversize MendelMax 2. It was a good learning experience, but very frustrating at times. Overall, I think I'm glad I did it that ...
user avatar
  • 3,181
10 votes

Why aren't fixed build platform 3D printers popular?

Why is this so rare? Such kind of printers usually harder to assembles, calibrate, and maintain because 3 axes machine is a bit more complex than 2 axes. For instance, it's can be tricky to move an ...
user avatar
9 votes
Accepted

Convert 3D printer to laser engraver

Yes, one can convert a 3D printer into a Laser Engraver, and it isn't even all that problematic. You'd need to acquire a laser diode. These are usually not available with a lot of power - certainly ...
user avatar
  • 19.4k
8 votes

Would 3D printing multiple copies at once saves time?

Printing multiple parts can save you time. The issues pointed out by the other posters are all bang on, but one factor that has been neglected is the time it takes you to clear the build plate and ...
user avatar
  • 1,855
8 votes

Heat bed troubles

What you purchased is probably a bed that can be configured for either 110V or for 220V, depending on how you hook up the wires: the bed contains two heating elements, hooking these up in parallel ...
user avatar
8 votes
Accepted

After some time stepper motor is hot

The second motor is hot. And the third is very hot. I can not even touch it. This is to some degree, completely normal and expected. From the datasheet for a typical NEMA 17 stepper, the rated ...
user avatar
7 votes
Accepted

Commercially available 3D printer fume and UFP extractor

Following on from Harvey Lim's answer, to give a concrete example of a DIY filter, which uses active carbon, see ABS 3d Printer Nanoparticle and Chemical Exhaust Air Filter: ###Description Enclose ...
user avatar
  • 5,717
7 votes

How can I program a 3D printer to move using Arduino?

Yes. Look up Arduino Ramps 1.4 http://reprap.org/wiki/RAMPS_1.4 Following the programing is all done for you in the firmware. That said you can edit it. Just open the firmware files -- it is ...
user avatar
  • 3,003
7 votes
Accepted

3d printer not printing circles correctly

Possible causes for the printer not printing correct dimensions: Incorrect number of steps/mm in firmware settings Belts are not tight enough Pulley slips on the shaft Looking at the picture, I ...
user avatar
  • 868
7 votes

Printing with colorfabb XT fails after several successful layers

This looks a lot like under extrusion caused by heat creep. Heat creep is when the nozzle temperature 'creeps' up through the filament and makes it melt (a bit) and form a blob (or just widen enough ...
user avatar
  • 844
7 votes
Accepted

Why do 3D printers have only one limit switch?

In principle you only need the minimum axis position (or the maximum), the offset to the bed and the size of the bed in the direction of the axes. Fortunately, you can specify this in the firmware: E....
user avatar
  • 30.6k
7 votes

Why aren't fixed build platform 3D printers popular?

As a frame challenge, they kind of are. It's just that the optimal, and in some sense only reasonable, design for a fixed build platform that doesn't move on any axis is the delta robot geometry. This ...
user avatar
6 votes

HDPE as the body of a 3-D Printer?

The main consideration when building the body/frame of a 3D printer is the stiffness. The stiffer the material, the less the frame will deform under load, and the more accurate and repeatable your ...
user avatar
6 votes

What are the pros and cons of collecting parts yourself, versus getting a DIY kit and then modifying it?

A few months ago I bought a cheap (220 USD) Prusa i3 kit from China and put it together. Putting it together was fun and still a bit of a challenge. It was also nice to have pre-configured firmware ...
user avatar
6 votes
Accepted

ABS or PLA for structural printed parts?

To answer the main question "Is ABS better for structural parts of a 3D printer as opposed to PLA". The answer, unfortunately is it depends. ABS has lower yield and ultimate strengths compared to ...
user avatar
  • 1,855
6 votes
Accepted

Building a 3-D printer

Building a 3-D printer is actually very easy, assuming that you are electronically and mechanically competent, and there are a whole bunch of websites devoted to doing just that. The principal of ...
user avatar
  • 5,717
6 votes
Accepted

Hot end jamming very quickly

You are suffering from what is called "heat creep". Molten filament is creeping up the heat break and into the bowden tube, where it is causing a jam. You need to install a proper radiator block that ...
user avatar
  • 2,972
6 votes

Ball screw: Maintaining Z axis position when motor is OFF

My question is a ball screw of pitch 4mm or 5mm, will it be able to Maintain it's position when motor is deenergized under a load of 15 kg shared by two systems. The detent torque of a typical NEMA ...
user avatar
6 votes

Are there practical reasons to NOT use a stepper motor with lead screw for the X and or Y axes?

In addition to cost, backlash, which can be experienced in the Z-axis where threaded rods and leadscrews are mostly commonly used, would/could become an issue. The elasticity of GT2 belts generally ...
user avatar
  • 5,717
6 votes
Accepted

How to 3D print a shopping cart

If you need a real shopping cart, please think about actual requirements. Carts are sturdy devices, build on very consistent frame, because they are meant to carry heavy loads. The built must be ...
user avatar
  • 906
6 votes
Accepted

Why not use high rpm stepper motors with high microstepping with gear reduction in 3D printer?

To answer each point: Microstepping improves resolution as much as 32 fold (I think) but reduces torque the higher you micro-step. Torque is not reduced by micro-stepping. Torque reduction only ...
user avatar
  • 2,286
5 votes

Would 3D printing multiple copies at once saves time?

Yes, and no. It depends. For FDM printing, the printing time mostly scales linearly with the number of objects. However, some printers have a "minimum layer time" whereby smaller layers are printed ...
user avatar
5 votes

Would using a leadscrew with 1 or 2 mm lead, en lieu of 8 mm, result in a better printer?

From Accuracy vs Precision and Threaded Rod vs Leadscrews in 3D Printers. I have highlighted the relevant parts: In general, FFF/FDM printers use relatively infrequent, small, precise movements on ...
user avatar
  • 5,717
5 votes
Accepted

Can cheap hotend parts sourced from China actually produce good prints?

Hard to say for sure - my whole printer is cheap parts bought as a kit in China by a Chinese student who abandoned it in the US (I resurrected it after it was abandoned.) It includes all the parts you ...
user avatar
  • 723
5 votes
Accepted

MOSFET problems!

No, this module is completely useless for your intended purpose. The load side is marked with "5A 5-220VDC". This means it can only switch up to 5A, maximum. The heated bed draws more than twice this ...
user avatar
5 votes
Accepted

Lead screws - M8 instead of M5?

as long as you match the parts that is ok. The m8 rod will give you more stiffness and will be harder to bend. As the result, you will have to calibrate the steps/mm settings in the firmware.
user avatar
  • 1,922
5 votes
Accepted

Cooling fan noise when head is moving in the X axis

As discussed in the comments... The problem with the fan seems to be its flimsy attachment to the printer head. The fact the fan chassis is not firmly kept in place allows for it to act as a ...
user avatar
  • 4,537

Only top scored, non community-wiki answers of a minimum length are eligible