1/16 wing nuts on studding

[Simon Cornes]

Does anyone know where I can get hold of these? I need about 12 for securing hatches so the studding should really be on a T-piece with lugs securing it to a surface at either end and then the stud and nut are secured on a tab on the edge of the hatch. I don’t know if I’ve described that clearly but the alternative might have to be resin cast but a 3D printed one would be better!!

[dnl42]

As I'm learning 3D modelling, this was a good exercise. Is this what you're asking for?

 

[Simon Cornes]

1 hour ago, dnl42 said:

As I'm learning 3D modelling, this was a good exercise. Is this what you're asking for?

 

No, the nuts are wing nuts, if you know what I mean? Also known as butterfly nuts so no flats and just two ‘Wings’s . Also the stud should be longer above the nut and also below and ending in a horizontal plain bar. What you have produced so far is beyond me though!!

[dnl42]

Heh, I read wing as in aircraft, not nut.

 

Here's another rock

[Simon Cornes]

That is really good!! 
 

Id say that the T piece should be the same diameter as the threaded part.

The wingnut should be about 5mm from tip to tip and the rod should be about 1.75mm in diameter. The rod should be about 5mm overall length and the T piece should be about 4mm long.

 

This is very impressive design work though!!

Simon

[dnl42]

Hm, are you looking for functional parts? Hobby resins are just not suitable for any functional use. OTOH, 3D-printed metal parts can be certified for flight.

[Simon Cornes]

2 minutes ago, dnl42 said:

Hm, are you looking for functional parts? Hobby resins are just not suitable for any functional use. OTOH, 3D-printed metal parts can be certified for flight.

No, just static. They are used to fasten down the 6 engine room ventilators on a 19th century steam tug. The ventilators are all open so the parts are just unlatched and hinged down. The alternative is to obtain some threaded rod and then make the wingnuts from card, 12 times! It can be done of course. I’ve seen 3D printed nuts and bolts but never wing nuts!

[dnl42]

I'm thinking the threaded rod is too thick. 

[Simon Cornes]

52 minutes ago, dnl42 said:

I'm thinking the threaded rod is too thick. 

Agreed and the T piece should be cylindrical.

[dnl42]

Like this?

[Simon Cornes]

That’s right but make the threaded part longer and change the nut style back to the previous one. Not demanding am I ?😀😀

[dnl42]

I worked on the wings. It's now about 6mm wide.

There is ~1.7 mm above the top flat and 1.2mm twixt the bottom flat and the bottom bar. What should they be?

[Simon Cornes]

39 minutes ago, dnl42 said:

I worked on the wings. It's now about 6mm wide.

There is ~1.7 mm above the top flat and 1.2mm twixt the bottom flat and the bottom bar. What should they be?

That's pretty good. It would be better to have the 'ears' of the nut on the same plane as the T piece at the bottom so that it could lie flat against the engine room casing. If I thought the wings were too wide I could always file a bit off!

I see from your details that you're in the OC. Could you post me a dozen or is that not an option? If so, how much would it cost? I don't have any facility to print 3D stuff I'm afraid.

[dnl42]

Wings flattened. It's 5.4mm wide by 5.75mm tall

 

The bar is still 4mm  long

 

 

It may be better if I sent you the STL file for somebody in-country to print for you.. While I've been designing and printing functional tools and parts for modelling and household on an FDM (filament) printer, I'm unpacking my first resin printer from boxen today. As such, I'm not in a position to send parts any time soon; perhaps late Sept. If you are willing to wait for whenever, you would only need to reimburse shipping.

[Simon Cornes]

You know I think the wings look better as they were before if it’s possible to revert to that? You could always add a bit of extra thread at the end above the nut to to make sure they’re long enough to do the job. As for printing, I’m more than happy to wait until later this month for you to get set up. I don’t think I know anyone nearby who has the right kind of printer!! But this would be a very small envelope I would have thought - logically you should be the cost of a stamp plus a few bucks to cover ‘materials’ and hi tech design time!! What you do is absolutely beyond my skill set so I’m very grateful!! If that’s okay then I can PM you my address in the U.K. 

Thanks again 

Simon

[dnl42]

Sadly, I didn't save the model between the previous 2 generations, so I had to redo the wings. I added 0.5mm to the top.

 

 

As for skill, I think Arnold Rowntree would have been dismayed by my klutzing about with this.  But I did learn some new techniques.

[Simon Cornes]

That is spot on!! Well if you are klutzing about then I am a veritable Neanderthal!!

But seriously, if you are able to produce maybe 15 of those then that would solve my problem!  Let me know what you think please.

[dnl42]

As a Very Small Part(TM), it will be good to try this after I have a few prints, and my own designs, under my belt.

 

I'll PM you when I have some physical parts to show. Again, no sooner than later this month.

[Simon Cornes]

Thats fine, I'm in no rush and thanks again,

Simon 

[Bozothenutter]

Why not download a file from McMaster-Carr?

Or get 1/16 wingnuts, Aber does them, probably others too.

[Simon Cornes]

34 minutes ago, Bozothenutter said:

Why not download a file from McMaster-Carr?

Or get 1/16 wingnuts, Aber does them, probably others too.

Thank you for your thoughts. I don't have a 3D printer so no point downloading anything. Your Aber suggestion is interesting and I have had a look and their products might do but I have also found a guy on eBay in the UK who does 3D printed wingnuts with a bit of threaded rod above but not below. I have messaged him to see if he could come up with something closer to what I have in mind. 

[Simon Cornes]

2 hours ago, Simon Cornes said:

Thank you for your thoughts. I don't have a 3D printer so no point downloading anything. Your Aber suggestion is interesting and I have had a look and their products might do but I have also found a guy on eBay in the UK who does 3D printed wingnuts with a bit of threaded rod above but not below. I have messaged him to see if he could come up with something closer to what I have in mind. 

He turned out not to be able to help after all.

[Simon Cornes]

A little postscript, dnl42 did the business and could produce some excellent 3D prints for me and he sent me images of the printed parts but when it came to posting said prints to the UK he discovered it would cost $66 !! But he was extremely kind and sent me a link to his files which I was able to pass on to a mate in the UK who is going to print dnl42's work off for me. That is a great example of how Britmodeller members help each other out and I am very grateful for for dnl42's kindness.

[Stresser]

FYI for those using Fusion360 in the future.  One of the best things in Fusion is the Mcmaster-Carr Catalogue.  The catalogue carries a huge range and pretty much every fastener in there has 3D models which can be downloaded (at least I haven't found one yet that can't be) directly in to the model for use.  Of course, you would scale as required.  At the very least this gives a good place to start from and at the most you save yourself the time of modelling standard parts (as fasteners are often described). 

 

If you use FreeCAD there is a toolbar for fasteners that does about the same thing. Metric and Imperial.

[dnl42]

I did end up using the catalog for the wing nuts.