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ACarrell

Reducing Bubbles In Resin Baits

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Hi, I just started trying to pour resin baits and have had various results with the amount of bubbles in them. Since I'm not using a pressurized system, and can't afford one, I'm just looking to get the best results possible from a standard pour. I've seen a few tips here and there, but nothing contained all in one thread , And not all that much information in general on reduction. I've tried warming the silicone molds, been as careful as possible with mixing the two part epoxy resin, just trying to be as consistent as I can, and still have had varying results.

Anyway, what are some of the ways that you have reduced bubbles in your Resin pours ?

Also, what type of resin are you using? Have you noticed any particular brand or model pours more consistently or with less bubbles?

Thanks !!!

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There are two lines of thought on mixing resin:

 

1 - mix slowly so as not to create too many bubbles. The mixing takes a lot longer and there is always a chance of missing a bit and spoiling the pour.

 

2 - mix like crazy, as fast as possible and then sort the bubbles out. Mixing is much quicker and thorough, leaving more time for bubble management.

 

I use method number 2. I mix in a deep poly container. Once mixed, I spread the mix thinly up the sides of the container. This exposes the bubbles for popping. I then scrape the mix together and pour.

 

Another good idea, is to quickly paint the cavities with a coating of the resin, making sure you get into all the nooks and crannies, eliminating all air pockets. Close the mold and pour.

 

Dave

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Since your using silicone, you can always squeeze the mold once poured and this will help remove bubbles.

Pressure chambers can be expensive, but if you ever get to the point where you want one. Harbour freight has one on the cheap that will work safely for like 30$ or so. If you don't mind consistent safety, those 15$ pressure cookers at Walmart work too. All you to I'd add a regulated to the top and make sure you don't over fill it. I would personally go with option number one. Just my 2 cents.

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I havnt poured any resin... Yet... But that will change soon

Ive watched a few videos on it... From what i gather, moisture is the enemy.... This time of year, the weather can be kinda haywire..... Mixing resin on a rainy day could be your cause of bubbles

Im thinking of getting a dehumidifier to go in my new shop next month... Might help with this issue

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There are two important factors that many overlook when pouring resin baits.  You may think it doesn't make a difference, but it really really does...

 

First off, I use Alumilite resins and pour into handmade silicone molds....Coat each pour inside your mold with UMR mold release spray...I've probably poured over a thousand this year!  

 

1.  When you mix your resin + micros....mix by NEVER lifting your mixing tool off the bottom of your mixing container...this makes for less air bubbles in your mix.

 

2. When you pour your resin....string pour it at an angle into your mold like you would pour a heavy beer into a glass trying to eliminate too many suds....allowing the resin to run down the inside side of your mold       if possible.

 

Finally, as the resin is setting up in the mold, I always give the outside light taps as I turn the mold around to allow any air bubbles to rise out the vent hole (this is only about a 10 second process which helps)

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