MTI hose question

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MTI hose question

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Kacordy	K Kacordy posted 5 Years Ago HOT Topic Details
K Group: Forum Members Posts: 17, Visits: 341	I would like to try MTI hose. Out of curiosity I took a 2 foot section of MTI hose, added an elbow at one end, sealed it with yellow sealant tape, at the open end I wrapped and sealed it with sealant tape, then applied vacuum. The MTI Hose holds at 20 very well. I thought the white covering was supposed to be porous and let the gasses seep through while blocking the resin? I’m I supposed to take a fine needle and poke holes through the membrane to get it to work? Thanks, Allen
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Kacordy	K Kacordy posted 5 Years Ago HOT Post Details
K Group: Forum Members Posts: 17, Visits: 341	+x Warren (Staff) - 9/23/2020 2:05:37 PM Hanaldo probably has the right answer here. The hose is naturally a restriction by design. The holes in it need to be small enough to restrict and stop resin flow. However air will still pull through them albeit at a slower rate. That of course doesn't matter as the air flow when infusing is not high flow anyway. IT needs to be able to allow the trapped air in the laminate an air path out into the vacuum line while stopping movement of resin. It does this very well. I just wanted to test a piece of the MTI hose before I set it up on a cowl project. I only pulled it to 20. It holds at 20 forever. I cannot thank everyone enough for your input. I completely new to vacuum bagging. I’m starting with a relatively small 25 by 10 inch wide cowling. My focus is learning this process thoroughly before I attempt a much larger 46 by 18 inch RC boat hull project. I spent the last year building the new boat and it’s complete. I will pop a mold off the bottom of the new boat this weekend. The cowling is an item for me to learn the vacuum bagging process. I discovered the CF seat video on YouTube a month ago. That’s why I ordered the MTI hose because I believe it will be the best way to infuse the much larger hull. I will set-up the MTI hose on a large piece of glass and make a CF flat panel. Thanks for your help, Allen
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