Making a Cheap Pressure Pot for Knife Making Material Casting
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- Опубліковано 30 жов 2021
- Casting resins and epoxies have become popular with a wide variety of craftsmen including knife makers and woodworkers as well as prop and costume makers. In this video, bladesmith Walter Sorrells shows how he turned a cheap pressure pot for painting into a pressure vessel for casting resins and epoxies.
If you'd like to see more of Andreas Kalani's knives like the one shown in the video at 2:31, check out www.andreaskalani.com/.
Video about making a vacuum chamber: • Making a Cheap Vacuum ...
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Love it!!
Thanks for the video. Nice to have one a person with basic tools can make, the last one required a mill and other tools that the average joe doesn't have.
Very cool. I made one of these a few months ago. It works great.
Clear and direct. Good stuff.
Great build. We shared this video on our homemade tools forum this week :)
Nice video. I actually have on of those. I use to stabilize wood. I got a clear thick (>1“) plexiglass disk with a gasket as a lid that I use to evacuate. Then the standard lid to presurise the resin.
This was fantastic! I’ve looked at some of the vacuum chambers and pressure pots to work with resins, but this way is tons cheaper than the others!
Hey nice little video. I just started making my first knife in over a year. feels good to back at it.
Just an old saying the navy uses. No seal is air or water tight til its greased. Maybe some light silicon grease
🤔 While you talking about which was was to wrap Teflon I believe you were wrapping it the wrong direction. ... I didn't go back and double check tho🤣
Great video 🙌
Great idea.
Great stuff Walter. Been stabilizing a few years now, and it's time to get going on a pressure pot build. Maybe the top and bottom of a large gas cylinder with a hinge and a good seal. Thanks for the kick.
I guffawed so hard at the 4 year old gasket maker that the dog spooked and started barking at everything trying to figure out what I was barking at.
Thanks! I really enjoyed this vid. You are great on How To videos! Thanks for sharing! KANSAS
Mr Sorrells My name is Travis Kirk my friends call me Kappy, anyway I happened upon a brand new paint sprayer vessel/pot and watched your according video but this paint vessel has an auger or agitator in it as well as ever else from the one in your video.... Can I turn this into a resin pressure pot or am I SOL? My own theory is that it appears the auger assembly is threaded in somehow so in theory I should be able to cap it. I know you can't see what I'm talking about but you seem to have a hell of a lot of experience and I had hopes of you pointing me 8n the right direction... BTW if I did everything right I'm now a Patreon member. That's the least I can do given the amount of stuff I've learned from you. Thanks for your time.
Put a disposable filter for paint guns to reduce the moisture at the pressure pot. This makes a huge difference. Alumilite and all resins don't like moisture.
when casting a handle, do you put the epoxy/stabilized wood mold in a vacuum chamber first to suck the air out and then into the pressure pot? or do you skip the vacuum chamber step and go right into the pressure pot?
Can that pressure pot be used as a vacuum pot as well?
Alternative title: Making a pressure knife for pot making
Lol, you wrapped all your Teflon tape on in the wrong direction after telling everyone not to.
I was rather confused by that, myself.
Maybe he was doing it in a mirror :)
I assumed it was just to confuse us. Then I thought mirror?
No, he did it wrong, I checked the turning direction of the end cap
Walter is playing 4d cheers with us. He purposely put that into his video incorrectly. Hahaha! Rock on, Mr. Sorrels, rock on!
Great idea, thanks, I will be building one myself.
One problem I have is with the relief valve adjustment. I worked 32 years in the air compressor industry. Showing/telling people how to adjust the relief valve for a higher pressure is not a good idea. If someone does this on their air compressor 'cause it blows at a pressure they don't like it's setting them up for a possible accident. Insurance won't cover damages when they find out the relief valve has been tampered with and they will check. Better to buy one (in this instance) at the higher pressure assuming the paint pressure pot is rated for it.
Wouldn’t a vacuum be better since it pulls the air bubbles out of the resin instead of making the air bubbles smaller?
It’s porous so the air will evacuate during off gassing.
Watched a guy try that in a video, I thought the same, pull the air out, no bubbles. As it turned out, the bubbles really bubbled, like boiling, the result was a frothy mess as the resin started to go off before all the bubbles could be evacuated. Could it work? I still think so, but an extremely slow set resin and playing around with the vacuum settings.
I had the same idea on a couple of resin projects that I had, but it didn't work. It just keeps bubbling away and turns into a big mess. I think the reason vacuuming out the air doesn't work has something to do with vapor pressure, where dropping the pressure causes certain compounds in the mixture to start boiling.
Yeah, I think it does work. You need a really long curing resin. An hour or more. Also I saw a video where the guy making the blank for an bow handle, went in stages as he applied his vacuum. He would actually release the vacuum two or three times and the bubbles would pop. He said that during the process the air in the pieces of wood would actually be replaced with resin, hence the bubbling. He also use a container that held more resin than was needed. I think both processes work perfectly fine.
@@nefariousyawn “Boles Law”
I quit watching forged in fire after they robbed you of victory. You were clearly the best blade smith there and they gave you canisters damascus which is notoriously brittle due to the number of welds involved. Then to test it they did things to those knives that no one would ever consider in the real world. I was shocked to see how rigged that show was. You are a master blade smith and I am proud of you even though you are from Clemson.😉
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