Thanks! Mine is still serving me well. I'd love to hear how it works out for you.

Thanks for the kind words. Yup, using what I've got for now. As the channel grows I certainly intend to upgrade my recording equipment, but as long as audio is clear enough to understand, making good content is priority #1. I appreciate the feedback.

That is CERTAINLY in the queue :). I've got an infusion video coming up where I used this pump.

Generally the pump is either run continuously throughout the cure or some kind of vacuum chamber and switch are in between the pump and the part so the pump only turns on when the vacuum drops below a certain level. All vacuum bags will have some leak rate, even if it's very tiny, so it's good practice to use one of the two above methods to ensure the vacuum level never gets below a certain amount. With this pump I did have a tiny bit of oil come out into the tube the first time I used it for an 8-hour cure, but it stayed in the first inch or so of tubing coming vertically out of the pump.

Still using it, and it's still working great for everything I've done including infusions.

Still going strong, but I've spent more time building my shop in the last year than building parts, so the pump hasn't gotten a ton of use. I keep thinking I want to do a follow-up on this video, but I want to use the pump for a while longer before I do.

Have you checked all your hoses and connections? Connectors would be my first suspicion. Are you using teflon tape for any threaded connections? You might consider just unscrewing them, putting fresh tape on and screwing them back in. Hope you're able to figure it out.

I'm not exactly sure what you mean by your last statement, but let me address your first one. This video was made at about 4500ft elevation. According to engineer's toolbox (www.engineeringtoolbox.com/air-altitude-pressure-d_462.html), the atmospheric pressure at that altitude averages 25.4 inches Hg. Day to day pressure varies a little, but assuming it was an average day then my measured 25.4 inches Hg from this pump was a perfect vacuum. Now in practice there's no way it was actually perfect, but pretty darn close. Your statement mistakenly assumes that I was at sea level, where atmospheric pressure is 29.9 inches Hg, or 1.013 bar. However, even if the pump was only pulling 25.4 inches at sea level then that would absolutely be enough for composites work. I like getting all the vacuum I can, but that doesn't mean that you can't make quality structural parts with an imperfect vacuum. In fact, some resin systems actually NEED a slightly lower vacuum in order to prevent off-gassing inside the laminate. I've seen beautiful and usable parts made with a reversed aquarium bubbler pump that couldn't have been pulling more than about 5 inHg. That's not to say that higher vacuum wouldn't give higher performance parts, but you definitely can make composite parts at lower vacuum levels. And I'd wager that the improvement in performance from 15 inHg to 29 inHg is less than 5% for most epoxy systems.

​@@SasquatchComposites Thanks for the correction! I indeed had wrong assumption. My context is very different. I was looking for reviews of cheap vacuum pumps, but my purpose is not resin work.

@@user255 No worries. It's actually a question I've gotten a lot from people who just aren't used to the difference at altitude. Anyway, I hope you find a pump that works for your need :)

I'm really sorry to hear you had a bad experience with yours. It's interesting - mine has continued to work just fine, and though I certainly don't use it on a daily basis I have done several layups using this pump without issue. So it seems they may just not be consistent in their manufacturing. If mine was overheating like that I'd return it as well. Thank you for letting me know.

I thought I was seeing things but I could swear his head changed size🤣😂🤣😂👍