7 votes

How to hold electrical wires on a part?

A clamp and strain relief are used all over the place. You'll see this everywhere from domestic electrical plugs to the cable exit of power tools. The choice of cable and sheath/insulation is a ...
Jodes's user avatar
  • 1,304
6 votes

Is "pitch diameter" the same as the distance between the centers?

Pitch diameter is the diameter of the pitch circle described by the mid point of the length of the teeth around the gear, as shown in this diagram: The pitch circle defines the point where the teeth ...
Greenonline's user avatar
6 votes

Eject Circuit Board From Jig

Your lever is applying force to the approximate center of the board. It's not perfectly in the center and I suspect that the contact is such that the board ejects not quite vertically, but enough to ...
fred_dot_u's user avatar
  • 7,055
5 votes

Is "pitch diameter" the same as the distance between the centers?

As indeed answered by Greenonline, the centre distance is the average of the pitch diameters of the two meshing gears, but this is only strictly true when the gears are operating at standard centre ...
Involute's user avatar
  • 1,337
5 votes

How do you create a chamfer in 3D CAD that joins the edges of two different shapes?

This type of feature is typically called a "loft", but I would caution you that this should be used only if needed. Lofted features will cost you a lot of money if you try to get them machined. If you'...
Chuck's user avatar
  • 3,565
5 votes

How is the table of a 3d printer called?

This is called a buildplate :)
rakker579's user avatar
4 votes

Snap fit on an enclosure

3D prints are weak in the direction of each layers plane. You could try to make the part in a different orientation. Second thing to try is to use a coarser print. My friend tested mechanical ...
joojaa's user avatar
  • 3,597
4 votes

Why is 3D printing with metals so uncommon?

There are a number of practical processes for 3D printing in metals using various powder sintering techniques as described in other answers. However it is difficult to use the sort of direct ...
Chris Johns's user avatar
  • 15.2k
4 votes
Accepted

Why is 3D printing with metals so uncommon?

Metals are used. Albeit, in machines that are much more expensive and complex than your run of the mill FDM style machines that you're likely referring to. The main reason you don't see many or any ...
GisMofx's user avatar
  • 1,578
4 votes
Accepted

Is the construction of a high-speed 3D printer (replicator from Star Trek) possible?

A replicator is a very long way from 3D printing. Although 3D printing is often endowed in the media with quasi magical properties all it really is is multi axis CNC extrusion and not fundamentally ...
Chris Johns's user avatar
  • 15.2k
4 votes

Why didn't 3D printing become a standard commodity after around 2012?

One facet of this discussion which hasn't yet been discussed is 3D modelling literacy. Think for a moment about regular '2D Printers'. You may have one at home - but what do you use it for? For ...
Jonathan R Swift's user avatar
4 votes
Accepted

Why are many compliant mechanisms only flexible in the joints?

In this case its because they are emulating a bar mechanisms. This makes it possible for the designer to think of the problem in terms of revolute joints which allows them to use age old design ...
joojaa's user avatar
  • 3,597
3 votes

Simple and easy Open Source CAD tools for basic 2D and 3D designs

It isn't open source, but for students Onshape is free. Onshape runs in the browser so it will work on pretty much any current computer regardless of operating system. It is real 3D solid modeling ...
Eric S's user avatar
  • 880
3 votes

Snap fit on an enclosure

In addition to joojaa's excellent advice, you might try reducing the height of the interference and/or increasing the length of the flexure to which it is mounted — such changes would reduce the ...
Dave Tweed's user avatar
  • 6,874
3 votes

Are ABS/PLA too volatile to be used in cryo vacuum?

It is unlikely polymers will be an issue, but the additives used may pose problems. Polymers should have negligible volatility due to their long chain nature. Polymer additives may still pose an issue....
do-the-thing-please's user avatar
3 votes

Help understanding this dimension sheet

h11 is the tolerance range. There's a standard shaft/hole chart based on dimension/tolerance. (sorry about the images, I've searched on google but cannot find everything on the same image). h11 is ...
Leafk's user avatar
  • 345
3 votes
Accepted

Small scale manufacturing

I believe the key here is not the material, but the manufacturing method. I would not recommend a small cnc machine, which seems to be what you're considering. Those are cool and fun, but you will ...
Drew's user avatar
  • 1,921
3 votes

Why are many compliant mechanisms only flexible in the joints?

I'll start from the particular example you are asking about. It is a positional adjustment device. It is heavily used in laser optical tables to provide micrometer adjustments. And it falls in the ...
NMech's user avatar
  • 24.3k
3 votes

Reverse engineering a thread

Measure four things: the pitch ie distance moved in one turn, or one thread to the next outer thread diamter inner thread diameter angle of thread or between the faces: often 60 degrees But ...
Solar Mike's user avatar
  • 15.6k
2 votes

How to hold electrical wires on a part?

I would suggest modifying your 3D printed part so that you can use cable lacing to secure the wires. It's how NASA builds wires into cables and harnesses for space vehicles. If it can withstand ...
DLS3141's user avatar
  • 2,145
2 votes
Accepted

How to water seal a metal plate into the wall of a plastic water tank?

A common way to do this is to use mechanical fixings (bolts, rivets etc) and a flexible or semi-flexible gasket to provide sealing. Here the mechanical fasteners physically hold the plate on and ...
Chris Johns's user avatar
  • 15.2k
2 votes

Prototype for Injection Molding

There are 3D printers that are meant for quick prototyping of injection molds. They print the molding parts, and remove most of the cost of machining the mold. They arent suitable for mass ...
joojaa's user avatar
  • 3,597
2 votes

Sealing a rotating shaft in a 3D-printed part

Being able to create a waterproof seal on a shaft would also have to take into consideration the water pressure on the outside of the assembly. In this case, waterproofing is more weatherproofing, ...
fred_dot_u's user avatar
  • 7,055
2 votes
Accepted

Can wet welding be done in mineral oil?

No. In water welding you make steam (> hydrogen and oxygen) and conditions need to compensate for the problem of hydrogen entry in the steel. With oil you are adding the large problem of also ...
blacksmith37's user avatar
  • 6,134
2 votes

Can wet welding be done in mineral oil?

Mineral oil is not used to cool transformers because it is flammable. Transformer oil is a different compound which is not flammable and possesses high dielectric strength. In any case, the ...
niels nielsen's user avatar
2 votes

Why didn't 3D printing become a standard commodity after around 2012?

Not sure an anecdote will generalise to all applications, but certainly in research we very often resort to 3D printing as a first pass and especially when we need things fast, cheap, when its utility ...
Bawb's user avatar
  • 53
2 votes

Why didn't 3D printing become a standard commodity after around 2012?

Most people when asked want to do quite big items. Why wouldn't they? After all they live in a world where objects are table and chair sized. 3D printing usually can not do objects much larger than a ...
joojaa's user avatar
  • 3,597
2 votes
Accepted

Where can I find technical drawings for computer parts?

I would research component manufactures web sites. It is highly unlikely that you will find all the information in on location. Here our example web site links to get started. NZXT - Mini ITX ...
DiaperHands's user avatar
2 votes

Why are many compliant mechanisms only flexible in the joints?

This looks like a wire edm part for those fine interior features. My guess is the design on the thin cuts was optimized for that process - i.e. constant width cut except at the entry holes, which are ...
Pete W's user avatar
  • 1,541
2 votes
Accepted

Fuzzy texture in soildworks

Yes. This has been a feature since 2019 http://help.solidworks.com/2019/english/solidworks/sldworks/c_3d_textures.htm The only 'downside' is that the output is a mesh body not BREP, but this isn't an ...
Jonathan R Swift's user avatar

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