longtooth Report post Posted December 10, 2013 Going to get a air compressor from Harbor freight to use to mold holsters. I have the plastic bag and was wondering would you get the two stage or the single stage for this application. Quote Share this post Link to post Share on other sites
Denster Report post Posted December 10, 2013 It really doesn't make any difference with the slight advantage of the two stage being able to establish a vacuum seven or eight seconds sooner. Quote Share this post Link to post Share on other sites
Dwight Report post Posted December 10, 2013 I hope you don't get a compressor, . . . but rather a vacuum pump. I bought their cheaper one (I'm kinda like that, y'know) and have been seriously happy with it. It's done all I have asked of it so far, . . . and I think it was $99 when I bought it a couple years back. Just be sure to go to a local auto parts store and get a quart of compressor oil (or an AC/Refrig supply store). A quart will last a long time, . . . but if you run her dry, . . . you may have to buy her sister to get back in business, . . . and it only takes once. May God bless, Dwight Quote Share this post Link to post Share on other sites
supercub Report post Posted December 10, 2013 (edited) I hope you don't get a compressor, . . . but rather a vacuum pump. I bought their cheaper one (I'm kinda like that, y'know) and have been seriously happy with it. It's done all I have asked of it so far, . . . and I think it was $99 when I bought it a couple years back. Just be sure to go to a local auto parts store and get a quart of compressor oil (or an AC/Refrig supply store). A quart will last a long time, . . . but if you run her dry, . . . you may have to buy her sister to get back in business, . . . and it only takes once. May God bless, Dwight I was going to reply also, but Dwight covered everything I would have said. I got my vacuum pump oil at NAPA. Unlike many things I've bought at Harbor Freight, the $99 vacuum pump seems to work well. Don't forget the HF 20% discount coupon. Edited December 10, 2013 by supercub Quote Share this post Link to post Share on other sites
Red Cent Report post Posted December 11, 2013 This is new to me. I am using a vacuum for leftovers and it works kinda decent. I guess the Vpump works a lot better. If I buy the Vpump, what else do I need besides oil. Hoses. Connectors. Where do you get the bags? Quote Share this post Link to post Share on other sites
camano ridge Report post Posted December 11, 2013 Red, if you do a search on these forums for Vacuum forming or vacuum bag you will find acouple of threads On the subject including at least one buy Dwight he gives atutorial on making a vynil vacuum bag there are acouple that list needed hardware etc. Quote Share this post Link to post Share on other sites
Red Cent Report post Posted December 11, 2013 Will do. Quote Share this post Link to post Share on other sites
supercub Report post Posted December 11, 2013 I don't know how to post a link, but if you search for the thread "vacuum molding" from Sept. 2012 it contains a lot of very good information. Particle ,from this site, posted a description of his vacuum system and where he got the components. His website, "Adams Leatherworks" also has a very good tutorial. I based my system off of his and am very happy with the results. Quote Share this post Link to post Share on other sites
Red Cent Report post Posted December 11, 2013 I found Dwight's post on rigging the Vpump. Interesting setup. Seems to be a popular item here. I used the food sealer machine to do this. I didn't do any more forming after I pulled it from the bag and let it dry. I need to check on the Vpump some more. Quote Share this post Link to post Share on other sites
J Hayes Report post Posted December 11, 2013 Anybody know which draws more vacuum? The single stage one(#98076) states 75 micron/ 10 Pascal, 2.5 cfm.The two stage one (#66466) states 25 mmicron/3 Pascal, 3 cfm. I would assume the single stage is more powerful? Just a tad slower on the cfm rating? Quote Share this post Link to post Share on other sites
Denster Report post Posted December 11, 2013 They will both establish vacuum but the dual stage will do it a few seconds faster. Quote Share this post Link to post Share on other sites
Dwight Report post Posted December 11, 2013 Anybody know which draws more vacuum? The single stage one(#98076) states 75 micron/ 10 Pascal, 2.5 cfm.The two stage one (#66466) states 25 mmicron/3 Pascal, 3 cfm. I would assume the single stage is more powerful? Just a tad slower on the cfm rating? They will for leatherwork purposes pull pretty much the same. This is a slightly technical answer: The maximum "inches of vacuum" would be roughly equal to the barometric pressure outside, around 29.92 inches for a typical day (1 atmosphere here on Earth). This would be, for example, how far the mercury would rise if you pull air out of the top of a tube whose lower end is in a pool of mercury. If you are in HVAC work, . . . the bigger one will be quicker to evacuate a larger system, . . . saving man hours, . . . yadda, yadda, yadda. For us, . . . sucking the air out of a bag and collapsing it on some ole dead cow hide, . . . either will do the job adequately, . . . the bigger one would probably work faster if you were making shoulder holsters for Ma Duces or Barret .50 cals. May God bless, Dwight Quote Share this post Link to post Share on other sites
Denster Report post Posted December 11, 2013 Dwight explained that pretty well. It is not the power of the pump that does the work for us but the column of air, which has weight, above the bag we have just established a vacuum in. That weight is about 18lbs/sqin give or take a bit depending on your location above sea level. Quote Share this post Link to post Share on other sites
longtooth Report post Posted December 11, 2013 thank you all for your replies and it's definitely a V pump. I keep forgetting that. Old age and such. thank you all for your replies and it's definitely a V pump. I keep forgetting that. Old age and such. Quote Share this post Link to post Share on other sites
jackd942 Report post Posted December 11, 2013 thank you all for your replies and it's definitely a V pump. I keep forgetting that. Old age and such. thank you all for your replies and it's definitely a V pump. I keep forgetting that. Old age and such. lol! Quote Share this post Link to post Share on other sites
TXAG Report post Posted December 11, 2013 Dwight explained that pretty well. It is not the power of the pump that does the work for us but the column of air, which has weight, above the bag we have just established a vacuum in. That weight is about 18lbs/sqin give or take a bit depending on your location above sea level. It's actually 14.7psi at sea level...I think 18 would put you in a very deep hole in the ground or something... Quote Share this post Link to post Share on other sites
Denster Report post Posted December 11, 2013 Correct 14.7psi at sea level. Should have looked it up before I posted. Quote Share this post Link to post Share on other sites
electrathon Report post Posted December 11, 2013 This is sounding like an episode of the Big Bang Theory. TXAG is Sheldon and Denster is Leonard. Quote Share this post Link to post Share on other sites
Dwight Report post Posted December 11, 2013 This is sounding like an episode of the Big Bang Theory. TXAG is Sheldon and Denster is Leonard. Just as long as you don't try to tag www.dwightsgunleather.com as the financial sponsor. May God bless, Dwight Quote Share this post Link to post Share on other sites
Denster Report post Posted December 12, 2013 Hmmm! Never watched Big Bang Theory so I don't know whether to be amused, complemented or insulted? Quote Share this post Link to post Share on other sites
TXAG Report post Posted December 12, 2013 If anyone should, it would probably be me...but I am comfortable with my Sheldonism...hahahaha Quote Share this post Link to post Share on other sites
