# Tag Info

32

It probably won't be fair. Incidentally, I have a decent amount of experience with 3D printing. It depends heavily on the particular technology that you're using to do the 3D printing, but nearly all forms of printing aren't perfect--depending on the design you make (solid? honeycombed? hollow?), there will be slight, or not-so-slight variations across the ...

15

I suggest blender. It's not the simplest of tools but it is free and learning it will improve your 3d printing skills. :-) (I write this answer also for future viewers of this question so I start basic). Check here for another answer: https://blender.stackexchange.com/questions/19772/how-do-i-measure-a-distance-between-two-points Import your STL-file. ...

12

There's not a simple answer to this question, or if there is, it's "no". However the situation is a lot more complicated. When printer specs cite accuracy like this, they're usually basing the claim on the nominal size of the smallest movements on each axis by one "microstep" of the stepper motors. There's a great article on Hackaday explaining the how this ...

10

I would say that the general answer to your specific question is no. If you want to justify buying a printer because of all the things you could print instead of buying that is not going to be easy. If however you are a DIYer and you have some CAD skills, or are willing to learn some, then consider the 3D printer as another tool you can use. There are ...

9

You can use OpenSCAD. It's a script based powerful CAD open source software under GPL. On Thingiverse, a lot of things are made with this CAD software (the Customizer flagged ones) and you can just download their source code (.scad) and directly edit them ! You can also import existing STL and edit them like they were a primitive shape like a cube. You can ...

9

One of the things I was told about was that many printers don't necessarily have that crazy precision of 0.05 mm (50 micron). Another person told me something different - he said most of those printers actually were capable of putting out 50 micron layer height. How is it really? Both things you've read are completely correct. Most printers are capable of ...

8

3D printing provides a faster method for prototyping and have always been labeled as prototyping machines. Until recently, it has been rare to see 3D printers used for "mass manufacturing". Yes, most mass-produced products start the manufacturing process with a 3D model. 3D models can be created in many different applications such as Solidworks, AutoCAD, ...

8

If your part needs structural support, then the word is: absolutely. Fillets provide the added support when you need it. If your part has a meeting line which is sharp - 90° (or perpendicular), there is a natural stress riser in your design. This is a weak spot where a crack can form. If strength is needed and the fillet won't interfere with the design, it's ...

7

Here is a set of options you can get: print the object on multi color printer Unfortunately we got some limitations here (on the market). Printers have limited set of heads which are in fact printing in one color at a time. So we usually have 2 colors, there are also 4 color heads. If there are more then they are rare, expensive or rare and expensive. ...

7

Yes this is possible. For an FDM/FFF printer, you'll need to print with supports. I might also recommend printing in PLA to minimize the chance of warping during the print (from experience). It might also help to slow down the feedrate to ensure smooth surface finish and avoiding delamination on such small layers. You'll probably see a decrease in the ...

7

You can get a model for nearly everything McMaster-Carr sells from their website. M4 Hex Head Screw - https://www.mcmaster.com/#91280a140/=15dmpx8 M4 Nut - https://www.mcmaster.com/#90592a090/=15dmqjy The options to download models are to the right of the drawings. NOTE: the site does prohibit use of these models for direct printing. You shall not use ...

7

Self intersecting meshes are considered dirty, yes. The reason you haven't had trouble before is probably that the software you were using was cleaning your mesh for you, behind the scenes. Generally speaking, these meshes can be cleaned without too much trouble by software like netfabb (https://www.netfabb.com/) which has a nice free version that I use for ...

7

One good option would be to - if possible - change the design, so the nut is inserted from the opposite side, so that the bolt just pulls it in tighter rather than pulling it out. Another option would be to instead of using a nut, use a brass threaded insert. These are like nuts, except they have ridges that are specifically aimed at locking it inside the ...

7

What you ask may be easier than you think. The slicing software is unimportant, generally speaking. Consider especially that your requirements fit the solution spot on. Take a look at this thingiverse snowman. Each of the colors is a separate model. Each of the colors is only one layer thick (0.200 mm). Each of the colors is placed with zero overlap to the ...

7

You could try Meshmixer its free and the supports generated with it are embedded into the 3D model. Here you can find a reference on Meshmixer supports. Meshmixer is well known for making custom supports for complex 3D models.

7

Are you using the stock firmware of your printer? Sounds like to me that you have 16 tooth pulleys and your firmware is set to 20 tooth i.e. 80 steps per mm The calculation behind the steps per mm is $\frac{\text{Steps per Revolution} \times Microsteps}{Teeth \times Pitch}$. The reason for this is that one revolution of the pulley will move the belt the ...

7

A resolution (sometimes called "accuracy" for marketing purposes) of 0.05 mm means that if you produce a bunch of 10 mm dice and a bunch of 10.05 mm dice, then the 10.05 mm ones will be statistically larger. Note that dice don't have to actually be anywhere near 10 mm, nor does a random die from the 10.05 mm pile have to be larger than a random die from the ...

7

There is no requirement for an enclosure when printing ABS. Like many things in FDM, there are improvements to be made, but there is a scale of what is possible. A heated bed is much more necessary (for similar reasons, the thermal expansion is significant and without a heated bed you have very high risk of warping). An enclosure is important for high ...

6

If you want to do basic edits to an STL, a program such as MeshMixer might be right for your. It offers the ability to combine and subtract models, add custom supports, and similar, in a fairly straight forward manner. An alternative that allows your to do complex editing of STLs would be Autodesk Fusion 360. Here you can import STLs into meshes, which you ...

6

I think it's a reference to a tolerance. Look at this ISO table. This States that the nominal diameter of 3mm is held to a tolerance of +-0.004mm. @DarthPixel provided some great links identifying the term interference fit (or press fit as I've heard locally) as described here. Also, here is a better link providing examples of how the tolerance works and ...

6

The right Google (or other) search should do the trick. I've provided 3D Printing services via 3D Hubs and MakeXYZ and some people do provide 3D scanning services. If you can't find 3D Scanning, you could try talking to a local machine shop. They might have the tools to be able to reverse-engineer the object, or know another place that can.

6

I use cosmetic vaseline - petroleum jelly. Usually it is white to transparent and odorless. It's cheap and available in all drugstores and cosmetics stores. As suggested by Tom van der Zanden I'm adding additional info about interactions of vaseline and plastics. I've found many web sites which claim that vaseline can damage plastics but none of them really ...

6

Typical FDM desktop 3D printers might struggle with this model as it requires you to either print large overhangs and use support structure (when printed laying down), or lacks a natural flat bottom surface to get good print adhesion (when printed upright). A couple of suggestions: Some FDM printers are great at printing support, and some even allow you to ...

6

Actually last year a group did use a normal FDM printer to 3d print hair, brushed, etc. See the press release from Carnegie Mellon University https://www.engadget.com/2015/10/29/3d-printing-hair-is-as-easy-as-using-a-hot-glue-gun/ http://technabob.com/blog/wp-content/uploads/2015/11/3d_printed_hair_by_Gierad_Laput_Xiang_Chen_Chris_Harrison_1.jpg That said ...

6

I did a quick search using The Google with the terms "stencil font." There were too many results to list here and the first link I clicked on provided some seriously ugly fonts. Stencil fonts by definition will result in supported center pieces. Windows has a native font named, surprisingly enough, Stencil which does the same, but it's not quite as ...

6

Custom 3D printed dice are distinctly lower quality than the dice from a FLGS you see in 'standard' dice sets, and around the same quality of die as the cheaper plastic dice available online. It depends somewhat on your printer, but you can get very uniform results in terms of material density with the issues in die fairness being limited to problems with ...

6

I've printed a few dice, and thrown them ~100 times each to check -- they were very far off from fair. One reason, I think, is that the inner fill (and thus a lot of weight) is oriented a certain way. It might help to do solid-fill or no fill, but I haven't compared yet.

6

A correct length shoulder screw would work great in this application. They have a shoulder that is held to a precise diameter and a length. You can thread a nut on and tighten it against the shoulder to prevent clamping your pieces. They may be hard to find locally in stores but are readily available at places like MSC, McMaster-Carr, and Bolt Depot.

6

When you want to change an STL file in FreeCAD then this is how I do it. I open the STL file in FreeCAD and select the option in the Part/Component sub-menu: Make a form from mesh (hope that I translated it well. I use the Dutch version). It can take quite some time but when it is finished you have an editable object. Just remove the STL object and do what ...

6

You are probably looking for something like this: Note this is for large beds (300 x 300 mm), so you would have to X, Y scale this in your slicer. This is a simple part that is very easily generated with OpenSCAD 3D design software (very good modeller if you are familiar with software coding), but could easily been designed in any other tool. Another ...

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