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Webb5143

Whites Not White

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I just got into hand pouring and am already hooked. the problem I am having is when trying to pour white, it turns more of a cream color. I am using lure craft green saltwater plastic, and keeping temp under 350 in a microwave. I would apreciate any help, seems like a lot of knowledgeable people on here. Thanks

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Thank you so much for the help, have noticed when I reheat clear plasitisol the change in collor. for now I am pouring small batches of big hammer type swimbaits and the constant reheating in the microwave is a pain, would u recomend a presto pot and if so are they all basicaly the same? also who do u think makes the best plastic. I have been looking at do it. Thanks again for taking the time to help out a newb  B)

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I would recommend Calhoun's plastic never had any issues with discoloration with proper heating.  Multiple microwave reheats usually ok.  I would also recommend getting more molds and be able to pour out a cup when using the microwave and try not to reheat.  Faster and keeps less issues from popping up with reheating colors, glitters, etc...  Can get some heat stabilizer and mix into current plastic to help out also.

 

If you are keeping temperatures in check and getting discoloration in the microwave presto isn't going to help.

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Thank You Bob, and Travis for the input, I hear you about more molds, the only one I have is a mold I made from a 3 and 4 inch swimbait. I am working on a new weedles type swimbait out of clay, and will make a mold out of it so then i will have more than just one mold. I think I got the white thing figured out, Just was wondering if presto pots would be more convenient than the microwave. I will check into the calhouns, It seems evoryone will probably have a different opinion as far as plastic, the do-it brand just seems handy.

 

  Thanks again, going to take the yak out and try some of the baits I made.

Cheers!

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make three or four or how many baits you want with just clear plastic. Pour them as perfect as you can. Get some pop or dwp and make a multi. cavity mold so you can pour more without reheating. I have molds that only have one or two cavity. So I did this so I can now pour 6 or more at a time.  

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I am confused on the mold pouring of the original mold thing, my original is rtv. If I molded the original wouldnt i end up with a reverse of my original.( like a negative) anyone recomend presto pots? also on some of my pours I notice some small dimples. they are not coming off the mold. Thanks again guys for the help, it is much apreciated.

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Sounds like you are really wanting for someone to push you toward the Presto Pot so here it goes. I use a Presto Pot with stirrer for all my plastic. I usually make 32 oz. batches but I can make as little as 8 oz. batches. For my white I use 23 oz. with 3 TSP of heat stabilizer. Then half way through I add another TSP. My whites come out white white. I understand that if you add a little UV Blast your whites will almost glow, I haven't tried it yet. A side benefit to a Presto Pot is you don't get any bubbles. I use a paint mixer on a drill to mix my plastic in a 5 gallon bucket. I can whip the plastic to a froth and by the time it is ready to pour there is not one bubble. Then you don't have to worry about re-heats. Your plastic stays at pouring temp all the time. I typically have 5 molds with 2 cavities each on a 4" swimbait which gets the plastic out pretty fast. The longer you leave it in the heat the more chance it will yellow. So more cavities is good. Hope this helps.

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Presto pots are great if pouring large orders but I don't like them for smaller orders.   It depends on how you are pouring.  Pouring bulk of one color and having stock never did much for me so my presto doesn't get a lot of use.  Most of the stuff I poured was more custom one off laminate colors for guys.  That said I still have my presto and have no issues using when needed.

 

Webb  yes you are thinking right just need to take it a little further.   Build your wall around the RTV mold and leave about a 1/2 inch gap between the mold and wall.  Pour the hot plastic into the cavities slowly to make sure no air bubbles get trapped and continue to fill and cover the entire RTV mold until about 1/4 to 1/2 inch plastic covers the mold.  After it cools like you mentioned you have a reverse of your original.  You then mix up some POP or rock puddy and fill it and let it set.  Once it sets up you will have a replica of the original mold.   Do a few at a time and you can have a lot of cavities the following day.  

Edited by Travis
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Go with a digital thermometer not infra red i was using a infra red and was discoloring my plastic switched to a digital and fixed my problem. The infra red was close up to 200F after that it would jump high and low and different each time u pull the switch.

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