3D Printing Question

[silentrunning]

Adaptor No.2 prototype - Ooo listen to me - is off to the bloke  around the corner....

[silentrunning]

What's the best printing material for this short of thing with relatively fine pitch threads? The bloke around the corner is going to print this one using a resin printer, is that necessary or desirable. Only ask as I'm sure there are going to be multiple iterations of this. Is it better to get prototypes done with the usual stuff and get the final cut done with resin?

[Gina]

My understanding is that resin is better for fine detail but more expensive.

[silentrunning]

3 minutes ago, Gina said:

My understanding is that resin is better for fine detail but more expensive.

Thanks Gina.

Yes this chap seems like a really good bloke. He said the resin is better for fine detail and usual charges £10 a time but he will do these at £5 as he reckons their will be a few iterations - and he's almost certainly right there.

 

[MarkAR]

I know that jewellers use a type of resin for printing jewellery for casting, what I remember is that it is harder and can be brittle. That would depend on the thickness of the material. You'll get better detail though.

 

[Dr_Ju_ju]

Instead of 'wasting' resin, try & print in PLA to ensure the correct fit\spacing, & then print in resin when happy....

[silentrunning]

1 minute ago, Dr_Ju_ju said:

Instead of 'wasting' resin, try & print in PLA to ensure the correct fit\spacing, & then print in resin when happy....

Thanks Julian, first one is underway in resin but i'll mention that if I have multiple iterations. The problem will be with the thread so I'll make a cut down with just maybe 5mm of thread to test until it's right and can be recombined with the bracket.

[silentrunning]

This has sent me down something of a rabbit hole....

[JamesF]

14 minutes ago, silentrunning said:

This has sent me down something of a rabbit hole....

I think it's fair to suggest that you may well have got the hang of FreeCAD now :)

James

[silentrunning]

Had some fun constructing a thread profile according to the ISO standard and putting it alongside the rough picture I took. Looks a lot closer than my first free hand attempt....

[NEM]

21 hours ago, silentrunning said:

Never done any CAD or thready things before, head fills like it's about to explode! 🙂

That's very impressive.  Can you recommend a tutorial on threads in FreeCad?

Noel

[silentrunning]

Thanks Noel. I found the Freecad documentation the most concise and easiest to use if your building a thread from scratch

https://wiki.freecadweb.org/Thread_for_Screw_Tutorial

 

[silentrunning]

1 hour ago, NEM said:

That's very impressive.  Can you recommend a tutorial on threads in FreeCad?

Noel

 

Thanks Noel. I found the Freecad documentation the most concise and easiest to use if your building a thread from scratch

https://wiki.freecadweb.org/Thread_for_Screw_Tutorial

 

[silentrunning]

Success, the second thread modelled on the ISO standard is as good a fit if not better than the adaptor i'm modifying! 

Sadly the resin printed adaptor came out as an oval rather than round so the chap who's printing these things is looking into that but he's gonna print the complete adaptor with the new thread using the standard 3D method. This will allow me to bring the camera closer to the filter wheel whilst the one Julian kindly printed me will bring the lens closer hopefully bringing the FFD down below 44mm.

Edited June 10, 2020 by silentrunning

[NEM]

5 hours ago, silentrunning said:

 

Thanks Noel. I found the Freecad documentation the most concise and easiest to use if your building a thread from scratch

https://wiki.freecadweb.org/Thread_for_Screw_Tutorial

 

I'm fairly new to FreeCad, but I can't believe I've not found that website.  There's plenty of useful info to read there.

Thanks a lot.

[JamesF]

I'm very much still learning my way around FreeCAD, but I think it's very impressive.  I use it for designing all my 3d-printed stuff now.  I even used it to design labels for the plants in my veg plot

James

[silentrunning]

6 hours ago, JamesF said:

I'm very much still learning my way around FreeCAD, but I think it's very impressive.  I use it for designing all my 3d-printed stuff now.  I even used it to design labels for the plants in my veg plot

James

I've got nothing to compare it to but I've really enjoyed learning it and have various ideas that will need to be implemented using it. It's quite addictive once you get the hang of it....

[silentrunning]

Just got the build back and it's a perfect thread and length and can mount inside the filter wheel bringing the camera as close as possible to the wheel...

[daz]

22 hours ago, JamesF said:

I think it's fair to suggest that you may well have got the hang of FreeCAD now

James

Just a bit!

@silentrunning- if you ever fancy doing tutorials in FreeCAD.....!!!

[silentrunning]

Well it's all coming together just one crucial component missing!!....

[haitch]

On 11/06/2020 at 09:25, daz said:

Just a bit!

@silentrunning- if you ever fancy doing tutorials in FreeCAD.....!!!

I think I'm going to have to give it a go - Tinkercad has sufficed until now and it's really easy to get something in your head and turn it into reality but there's something about being about to create that technical accuracy that I like.