Simon Cornes Posted August 30 Share Posted August 30 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!! Link to comment Share on other sites More sharing options...
dnl42 Posted August 31 Share Posted August 31 As I'm learning 3D modelling, this was a good exercise. Is this what you're asking for? Link to comment Share on other sites More sharing options...
Simon Cornes Posted August 31 Author Share Posted August 31 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!! Link to comment Share on other sites More sharing options...
dnl42 Posted August 31 Share Posted August 31 Heh, I read wing as in aircraft, not nut. Here's another rock Link to comment Share on other sites More sharing options...
Simon Cornes Posted August 31 Author Share Posted August 31 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 Link to comment Share on other sites More sharing options...
dnl42 Posted August 31 Share Posted August 31 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. Link to comment Share on other sites More sharing options...
Simon Cornes Posted August 31 Author Share Posted August 31 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! Link to comment Share on other sites More sharing options...
dnl42 Posted August 31 Share Posted August 31 I'm thinking the threaded rod is too thick. Link to comment Share on other sites More sharing options...
Simon Cornes Posted August 31 Author Share Posted August 31 52 minutes ago, dnl42 said: I'm thinking the threaded rod is too thick. Agreed and the T piece should be cylindrical. Link to comment Share on other sites More sharing options...
dnl42 Posted August 31 Share Posted August 31 Like this? Link to comment Share on other sites More sharing options...
Simon Cornes Posted September 1 Author Share Posted September 1 That’s right but make the threaded part longer and change the nut style back to the previous one. Not demanding am I ?😀😀 Link to comment Share on other sites More sharing options...
dnl42 Posted September 1 Share Posted September 1 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? Link to comment Share on other sites More sharing options...
Simon Cornes Posted September 1 Author Share Posted September 1 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. Link to comment Share on other sites More sharing options...
dnl42 Posted September 1 Share Posted September 1 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. Link to comment Share on other sites More sharing options...
Simon Cornes Posted September 1 Author Share Posted September 1 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 Link to comment Share on other sites More sharing options...
dnl42 Posted September 1 Share Posted September 1 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. Link to comment Share on other sites More sharing options...
Simon Cornes Posted September 1 Author Share Posted September 1 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. Link to comment Share on other sites More sharing options...
dnl42 Posted September 1 Share Posted September 1 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. Link to comment Share on other sites More sharing options...
Simon Cornes Posted September 2 Author Share Posted September 2 Thats fine, I'm in no rush and thanks again, Simon 1 Link to comment Share on other sites More sharing options...
Bozothenutter Posted September 2 Share Posted September 2 Why not download a file from McMaster-Carr? Or get 1/16 wingnuts, Aber does them, probably others too. Link to comment Share on other sites More sharing options...
Simon Cornes Posted September 2 Author Share Posted September 2 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. Link to comment Share on other sites More sharing options...
Simon Cornes Posted September 2 Author Share Posted September 2 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. Link to comment Share on other sites More sharing options...
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