Close

How are these shaped?

Postby Wosh » January 26th, 2018, 5:43 pm


Wosh
 
Posts: 12
Joined: January 8th, 2018, 3:25 pm
Image

I've seen some grainy videos from some time ago about the extrusion and coiling production of a basic plastic Slinky, but can't find anything on the shaped versions above.

My initial thought was that they were maybe pressed into shape from a blank cylindrical Slinky, but after inspecting one, I couldn't see any parting lines if it were a mold. Can they coil the plastic extrusion straight into those shapes, like the star for example?

Any help would be appreciated!

Re: How are these shaped?

Postby Cyberdemon » January 26th, 2018, 9:25 pm

User avatar

Cyberdemon
full self-realization
full self-realization
 
Posts: 3397
Joined: February 7th, 2006, 11:51 pm
Location: New York
I suspect the coil that the material collects on is just wrapped onto a shaped coil instead of the usual cylindrical one and the material flows around it OK. The corners still have fairly generous radii.

Re: How are these shaped?

Postby ralphzoontjens » January 31st, 2018, 12:14 pm

User avatar

ralphzoontjens
full self-realization
full self-realization
 
Posts: 755
Joined: February 3rd, 2010, 10:20 am
Location: Tilburg, the Netherlands
The best shape control is most likely to have the extruder head bend these directly into shape. From what I have seen factories do with CNC bending and pasta extrusion, that may very well be possible.
http://www.id-z.one
IDZone - Product Design || Visualisation || 3D Printing

Re: How are these shaped?

Postby Wosh » February 4th, 2018, 6:39 pm


Wosh
 
Posts: 12
Joined: January 8th, 2018, 3:25 pm
Thanks guys.

Not sure why my initial thought was to press it into shape. Gotta love a nice, generous radius.


Return to materials and processes