Help and information required.

Jimbobjones

Jimbobjones

Member Extraordinaire
Joined
Jul 6, 2022
Messages
6,206
Reaction score
21,404
Location
Cumbria
Is this possible with 3D printing to give a smooth surface.
The rough diagram below shows is of a 24.5mm ex D. Cylinder of 6mm height with a 3mm curved external lip and an 21.62mm ID.
That would make the external walls 1.4mm thick.
Thanks for looking.
If anyone says this is possible I will put up a wanted post to comply with our rules.

View attachment 867133
IMG_5222.webp
 
im going to start learning how to do things like this after boxing day a few questions ,
so the od will be ,21.62 + 1.4+1.4 = 24.42 .
and if it was drawn to scale would it have 3mm lip and 3mm shaft ? = 6mm sort of q p
 
Luap said:
im going to start learning how to do things like this after boxing day a few questions ,
so the od will be ,21.62 + 1.4+1.4 = 24.42 .
and if it was drawn to scale would it have 3mm lip and 3mm shaft ? = 6mm sort of q p
Click to expand...
Yes, in a nut shell 21.62+1.44+1.44=24.5
I missed out a.4 in the original post.
😂
 
Jimbobjones said:
Is this possible with 3D printing to give a smooth surface.
Click to expand...
Certainly can, however, with a cylinder you'll almost always end up with a 'seam', inside and outside, where the layer changes hight. This may need sanding inside and out, depending on your application. Depending on how well the printer is 'dialled in' it might need more than one print to get the sizes correct, but with such a small part that shouldn't take long per print (10 minutes?).
--
Ian
 
gold1640 said:
Certainly can, however, with a cylinder you'll almost always end up with a 'seam', inside and outside, where the layer changes hight. This may need sanding inside and out, depending on your application. Depending on how well the printer is 'dialled in' it might need more than one print to get the sizes correct, but with such a small part that shouldn't take long per print (10 minutes?).
--
Ian
Click to expand...
Most Interesting, a a set of two should theoretically take a max of say six runs, I presume the sanding is light? And what would that cost you in time and materials. Please
( not looking at a perfect quote , just an idea is good enough)
 
Jimbobjones said:
I presume the sanding is light? And what would that cost you in time and materials.
Click to expand...
Yes, light sanding and an overnight application of petroleum jelly (Vaseline) will make the sanding disappear and bring the colour back.
Cost, about 4p per print in PETG and 6p per print in time, etc. (although machine-time cost will depend on how each person works that out).
--
Ian
 
Last edited:
It's possible to 3d print a smooth print with a resin printer, but not sure how strong it would be, there used by some people who 3d print high quality figures, there isn't any lines on the resin prints that you can see with the naked eye.
 
You must log in or register to reply here.
Back
Top