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Hand Crafted Angling

Air bubbles and flex x 200

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Finally got around to trying out the flex x 200 bait plastics makes. Stuff is extremely stretchy but I'm having some major issues with voids and dents. Out of 15 baits I had 2 that were functional. Not too many dents but massive hollow parts in the baits. I'm trying to figure out the issue. All my molds are made by me so it is definitely possible its just a venting issue however it works fine with plastisol so I don't think that's the issue. This is my first time using a pot instead of a microwave so maybe I'm doing something to add bubbles but I hardly saw any inside the plastic before I injected it. The only thing I can think of is a temp issue. I was shooting at 350-370. I don't think it would shoot any colder than that. They recommend up to 400 degrees but I would think going hotter would give me more issues. The only other thing I can think of is the outside temperature. Not sure if that makes a difference but it was 28 degrees in the shed where I now pour. If anyone could help me out I would greatly appreciate it.

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On 2/19/2024 at 2:10 PM, CNC Molds N Stuff said:

Sometimes a cavity will skin over trapping air depending on how it's injected.  I'd try going hotter to reduce the viscosity, and shoot slower so the cavity fills from bottom to top allowing the air to float on top and get squeezed out the vents before they get covered.  Not knowing what the coefficient of expansion is you may also have to hold pressure as it cools.  

I heated it to the 400 degrees and injected it super slowly. That solved my air issues. Thank you very much!

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