Any way to produce a 100% same plastic lampshell without injection mold?

[clyde Verse]

Hi All,
I am going to produce a lampshell. It is a street light. With PC material and opal color. And UV resistance.
Here I attached an image that you can see. And STEP below.
But currently, I only need some samples for testing. I would like to know how to make some samples without plastic injection molding.

Thank you in advance,
Clyde Verse
Design Engineer
Neway Precision Works Ltd.
www.newayprecision.com

 

[3DDave]

Everything but size and the sort of testing that is expected.

Is that a flange on the inside? I do not expect an injection mold to make that.

 

[IRstuff]

Another way is brute-force CNC cutting from a solid billet.

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[Pud]

Vacuum cast in PU or acrylic. Rapid prototype outfits do it. More expensive than printing due having to make moulds, but final product is same as production.
You need acrylic for UV, PC for impact.

Politicians like to panic, they need activity. It is their substitute for achievement.

 

[clyde Verse]

I tried. This shell is oapl translucent. The light transmission of the 3D printed model was not uniform enough and turned yellow.

 

[Pud]

You really need to remove the inside flange. It's not manufacturable. (Even by vacuum casting PU off silicone tooling).

Politicians like to panic, they need activity. It is their substitute for achievement.