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Amazing metal printing

DavidR8

DavidR8

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These photos are from an MG forum I frequent. A fellow is building a turbo'ed & supercharged B series engine.
I'm likely going to make use of this technology to print some of my manifold and plenum parts.
These are printed in 316L stainless. The cost is astounding. $208 delivered for all of that.
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Cool stuff ain't it. I hope to get some manifolds printed out also but I have to have a much smarter friend then myself do a 3D printed of a mock up in plastic first.
 
DavidR8 said:
These photos are from an MG forum I frequent. A fellow is building a turbo'ed & supercharged B series engine.
I'm likely going to make use of this technology to print some of my manifold and plenum parts.
These are printed in 316L stainless. The cost is astounding. $208 delivered for all of that.
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SuperfastMatt on YT did a piece on the affordability and accurracy of 3d metal printed parts.
 
Keep us posted on vendors & prices. I foresee some of this in my future as well. I've bookmarked a few vendors mostly from model engineering forums & was involved with the CAD work on one particular set of 3DP metal parts that turned out great. It seems to be an ever-growing field. Some are basically outsourcing services where the print may be fulfilled by a list of different companies printers. I havent quite figured out if that good, bad or indifferent. Most all seem to be Asia based but these days I suspect thats a good thing shipping I customs wise.
 
I whipped this up just to get a rough estimate. This is 75MM x 45MM x 45MM. Flange is 5mm, wall is 3mm.
A pair in 6061 is $146CAD delivered.
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I'm curious how 3d printed metal compares to sintered metal parts? We use lots of sintered metal parts in industrial valves, and while they work well, they are always contsrained in location and supported on all sides. For example, a typical component would be a shaft adapter to connect a 17mm square valve shaft to a 22mm female square socket on a valve actuator. The adapters work great, unless they experience any unsupported side loads, and then they shatter.

How does a laser-sintered 3-d print handle vibration and side loading?

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whydontu said:
I'm curious how 3d printed metal compares to sintered metal parts?
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I typed your questions into Gemini & it spit out about 8 pages of very insightful material sscience information. (Too much to re-post here). The bottom line, big surprise, depends on the alloy, shapes & application. But I was surprised, 3DP metal actually compares quite favourably in the available alloys. In some respects the technologies are quite similar in certain processes. If its a custom part vs those look to be more or less standardized parts, probably some good applications for 3DP. Some sintering requires dies & all that ($ investment for a given part) but others seem to be more amenable to binders & baking. And then there is price of 1 vs price of 1000. I'm not sure 3DP scales the same way but easy enough to find out just punching numbers in the quotation calculator.
 
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