turbocad's custom dual/quad headlight mod

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yeah, I think a 1/2" threaded hole in the side of the pot might not go un-noticed :laugh: I think it will do the job, only one way to find out :smile:

your right about the vacuum pulling the walls of the mold in, I didn't think of that...

expecting the pump today
 
cant wait to see that setup, gonna make me a CLEAR infiniti emblem mold and glow it out with some LED's ,.. hehe.. :tongue:
 
ha, she gave it to me :smile:

ok, got the pump, it needs a special oil for it to create high vacuum, I looked everywhere & can't find it locally or even find a suitable substitute so I ordered it online... still trudging foward... most of the chamber is built & I have not one but 2 different friends that both have made the 1" plexi lid for me, just gotta get them from them now...
 
she see's this & says what the hell did you do to my pot? :k: latest progress...


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Logan said:
For a home cooking set-up that's damn nice John!
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ha, does that mean that it's not so nice as a vacuum chamber set-up? :shy: maybe I should just start building pressure cookers, any market out there for that? :tonguey:

what should I use to connect the chamber to the pump? should I use copper tubing or is a hose good enough? don't know if an average hose would collapse but I think it might... think I'm going to try & use a refrigerant recovery type hose as I know that'll work at up to 29"hg... just gotta source the final fittings & hose, get a vacuum gage & the oil & then fire this thing up & see if it works :smile:
 
turbocad6 said:
ha, does that mean that it's not so nice as a vacuum chamber set-up? :shy: maybe I should just start building pressure cookers, any market out there for that? :tonguey:

what should I use to connect the chamber to the pump? should I use copper tubing or is a hose good enough? don't know if an average hose would collapse but I think it might... think I'm going to try & use a refrigerant recovery type hose as I know that'll work at up to 29"hg... just gotta source the final fittings & hose, get a vacuum gage & the oil & then fire this thing up & see if it works :smile:
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Vacuum regulator?

Also; I'm no expert but if atmospheric pressure is 14.7psi and a "perfect" vacuum is 0psi, wouldn't the hose need to be rated for "at least" -14.7psi?

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turbocad6 said:
ha, does that mean that it's not so nice as a vacuum chamber set-up? :shy: maybe I should just start building pressure cookers, any market out there for that? :tonguey:

what should I use to connect the chamber to the pump? should I use copper tubing or is a hose good enough? don't know if an average hose would collapse but I think it might... think I'm going to try & use a refrigerant recovery type hose as I know that'll work at up to 29"hg... just gotta source the final fittings & hose, get a vacuum gage & the oil & then fire this thing up & see if it works :smile:
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No way bro, I was serious, thats' a bitchin' set-up. We've done some crazy quality stuff with less than what you have built. There are a variety of wire reinforced pressure rated hoses available that will be perfect for your needs.
 
Looks mean, turbo! Great work just in assembling this.

I wonder if your wife thought she would be getting the pot back eventually. :laugh:
 
changed the plumbing around a little to fit this where I need it to stay & sealed & tighetened it all up,even got a cool LED light for outside the 1" plexi lid so I can see inside easily. I got a stainless steel coated flexiable spiral rienforced gas line, think it might work? even if it did crush a bit I think it couldn't crush enough to completely block flow, should know soon enough I think, be nice to hit over 29"hg & hopefully the pump is big enough that it shouldn't take too long to reach high vacuum...


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yeah man, I guess I'm expecting it to crush, but the way it is spiral wound I don't think it would crush to the point of actually completely blocking flow... I hope :err:

I've seen those vacuum lines before & if I have to get something like that then I will, but I'm thinking I can get away with an alternative if I can... there pricey... shit, now I'm trying to get my hands on a very accurate high vacuum gauge & there pricey too, I picked up a cheap one local but not very precise for something like this, but it'll do for now I think... truth is either the pump creates enough vacuum or it don't, gauge is good for performance confirmation but not critical as to weather it works or not really I think... I'm working on getting a digital gauge that reads down to 10 microns, which is over 29.5"hg, think it's around 29.9 or so

I'm thinking worse case if this line does crush bad enough to block flow then I can plumb from the chamber to the pump with black pipe since it's pretty much permanently installed now where it is, & then I'd only need a short flex pipe to the vacuum pump... it's amazing how much force 29" of vacuum is, it's not the same as comparing it to a vessel that needs to handle 30psi... the difference is that with psi all a vessel has to do is contain it & not stretch, but vacuum is different & it creates a crushing force & things implode, at 29"hg of vacuum it's equal to being crushed with 44,000 lb's, or 22 tons of crushing force, which is why everything needs to be so strong...


what a trip this is, just to be able to just build some clear corner reflectors...

---------- Post added at 03:33 PM ---------- Previous post was at 03:27 PM ----------
Logan said:
Good point. Try it and see, if you blow a hose it creates a black hole and your shop disappears turn the pump off.
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haha, I hope I don't cause a rip in the space time continuum
 
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