Re: DMLS service recommendations

June 25th, 2018, 6:51 am

iab
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I made a single sample from DMLS. Unfortunately the geometry was such that the support material did not support. I got a "warp" on the finished part. The ID of these parts need to be +/-0.2mm. The warp blew that spec out of the water.

I did find a shop for DMLS and they can rapid machine the parts too, but it is about twice the cost for the rapid machining.

Since I posted this, my company was acquired by another company that is the second largest customer of GE additive (GE aviation is #1). I met the R&D guy in charge of our additive tech. I can't use it for personal projects, but I hope he can determine a way to eliminate the warp.

Re: DMLS service recommendations

June 25th, 2018, 6:55 am

iab
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yo wrote:Haven't used them for this yet, but Forecast3D has a couple of laser sintering machines.

https://www.forecast3d.com/
I did get a quote from them. They were somewhat competitive, but not as good as others.

Man, 3 years goes by fast.

Re: DMLS service recommendations

June 25th, 2018, 7:17 am

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ralphzoontjens
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I know at least that there is being worked on software that precalculates the warp in DMLS and adjusts the mesh accordingly.
So that would make it worth reevaluating its potential for these one-offs. But in my experience the AM-made parts are always weaker.
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Re: DMLS service recommendations

June 25th, 2018, 7:23 am

iab
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ralphzoontjens wrote:But in my experience the AM-made parts are always weaker.
Any reason why?
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