Screw library

I was wondering if anyone knows if there is a plug-in for rhino that will provide me with all types of screws so I can insert into my assemblies?

Similar to solidworks to specify its thread, cap type, material, length etc.

McVan Aerospace has a nice rhino 4/5 plugin,


Boltgen in food4rhino , I think is where a lot of suggestions advise—Mark


Thank you! worked like a charm

It would be great if there where images attached to each screw type spec!

did you use Bolt Gen? I love it and make good use of it. ]

Here is an example

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Hi Jodyc111,

Yes I have been using it. It is a very useful plugin.

I just wished that they would of added 2D images of all of types of screw features.

Nice example!

Here is another peek. I like being able to call out the dims on the fastenings in the tool. It puts them on their own layer which could be great for downstream BIM. I just discovered the ‘thread cutters’ and the nuts that come with them which pretty much closes the loop on making mechanical fasteners in my book. Check his stuff out! It is amazing and seems to actually have accurate threads available.

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love seeing the other kind of stuff rhino can do.

Jodyc, what does this thing do? Does it have the ability to support 200 lbs. downward force fully extended?— Mark

I’m trying to get some specs on that unit but it uses 8mm SS 1x19 wire to actuate it which is about 1700 lbs SWL. It is built for steering dual rudder sailboats. The wire goes to a pedestal or bulkhead mounted wheel and there are two drag links sort of like tiebars of a car steering system. I’ll post some renders of the whole system when I get them done.

I also use boltgen it is truly wonderful. If you have a bit of a background with machining it is quite simple to use.

Attached is and rendering of a tool I built using boltgen.

All my best … Danny

Hi Guys,
Try this link below for good 2D or 3D solid models for most of the products they sell.
One of my engineers uses it regularly and turned me on to it, very helpful source.



This is a great example how boltgen should work!

It would be great and extremely useful if we could download the files in .3dm, iges or step.

Chris have you downloaded and tried using boltgen? If not you should IMHO


Yes, I did and I have been using it, it’s a great tool. However I am not a machinist, I am an industrial designer/engineer My world is CAD - it would be very helpful if there where images explaining what each measurement represents.

In boltgen all I see is this:

I understand a few but others I have no idea what type of screws they are.
Best regards,

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I tried downloading two of those models but they seem to not work well with ApplyEdgeSoftening (even 0.1 edges results in ugly & peaky surfaces pointing in all directions). Any ideas of why?

I tried downloading both .Iges and .step format, but got the same results.

Anyone else noticing this problem, and is there a known solution?

// Rolf

Which models did you download Rolf, I’ll see if I can help.

I would try increasing your render mesh tessellation to say 1.0 if you are using polysurfaces, if they’re polygonal mesh models then you need to refine the actual mesh tessellation.

Also if this command fragments on step solid models as you saw, try a value that is an order of magnitude smaller.
So if 0.1 fails then try 0.01 if this fails then try 0.001 , this is the size of the virtual radius that is rendered on the sharp edges. If you want to test what works then try the fillet command, if you need a variety of softening on a single part rather than a global setting then you need to use the fillet solid edge command prior to the visual edge softening.