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3D printed parts for mock up


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Anyone use 3d printed pistons or domes for mock up purposes? 

I am getting ready to fianlly go through my spare engine and have cylinders that need a bore as well as what is "supposed" to be a 4mm crank.

Want to mock it up with plastic parts. set it to print a pair of pistons, the models I have set up to run are 6 hours for a high resolution print per pair.

Do not want to reinvent the wheel if someone else has already done this....

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You better have a very expensive 3D printer. I have printed many parts for mockup on aircraft structures but the tolerances are not tight enough for engine internals. I know there are high end printers that do but those are rare. 

 

Why not just measure the crank and cylinders and figure out what you have?

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You better have a very expensive 3D printer. I have printed many parts for mockup on aircraft structures but the tolerances are not tight enough for engine internals. I know there are high end printers that do but those are rare. 
 
Why not just measure the crank and cylinders and figure out what you have?
^^This

Envoyé de mon SM-G965W en utilisant Tapatalk

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Technology is cool, and i have a full machine shop, plus the printers at my disposal.

 

print oversize and machine to dimension if i have to.

 

kinda want to machine a printed sintered metal part anyway

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3 hours ago, 97Screamer said:

You better have a very expensive 3D printer. I have printed many parts for mockup on aircraft structures but the tolerances are not tight enough for engine internals. I know there are high end printers that do but those are rare. 

 

Why not just measure the crank and cylinders and figure out what you have?

Like Claude i am a bit of a geek when it comes to technology. Have a couple printers and lathe/mill/surface grinder/bandsaw at home, have $80k plus in printers and full machine shop at work. Why not? All it is going to cost me is tome and some nylon for the first couple runs.... i have 4 spools of it right now.

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Guess I don't understand the usefulness of mocking up engine internals. Unless you are trying to redesign something internally and need to check for interference.😯...are you planning on building your own parts ?

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8 minutes ago, Pinkylee said:

Guess I don't understand the usefulness of mocking up engine internals. Unless you are trying to redesign something internally and need to check for interference.😯...are you planning on building your own parts ?

Cause THEN I could understand it. THAT would be fun. To have an engine to experiment with and try out new designs on.

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18 hours ago, 97Screamer said:

double post,

i want to explore some ideas, probably won’t come to anything but it is nice to be able to explore the “what ifs”

and looking at what Claude does i am a hack.... i am a machinist that tinkers with engineering shit without any formal schooling.

so no pissing contest here.....

my stuff will be functional first, after it works i might make it pretty

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If you are doing it for fun to learn new stuff, go for it, i will help you if i can.

 

Dont know about your 3d printer, but our is about +/- 1/64 (0.015"), precision wise, 3d printer are not accurate.

 

What printing material you will use??? Wich printer ya got??

 

Envoyé de mon SM-G965W en utilisant Tapatalk

 

 

 

 

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My primary I built. 12"x12"x12" It looks like ass but works beautifully.

Lulzbot 18" for the other one.

I have access to another 5 that are larger than the ones I have at a local maker space I am a member of.... I might use one of those.

the ones at work are HUGE and stratasys.

 

ABS primarily for the stuff I am doing.

 

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