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  1. #1
    smacota1's Avatar
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    Using Casting Resin to fill Pump Shoe cavities

    I went to the the local Hobby lobby and purchased the Amazing (Brand Name) casting resin kit. I think it was 14.99 + the theft association tax. Took a few pics of it. Sorry for the poor pic quality but this stuff is really amazing and dries in about 10 minutes. Just take a die grinder with a sanding pad and dress it down after.
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  2. #2
    XL1200Ltd-Keith's Avatar
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    I have noticed that a few guys on the site have used this , I would like a report on how well this stuff holds up.

  3. #3
    USCME's Avatar
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    I recently filled my shoe with similar stuff but got it from uscomposites.com. Pretty much the same stuff, dries to a hard white plastic. My ski is down for a carb rebuild right now but I will track how this holds up over time. Although, I predict that it will hold up just as well if not better than a pump plug kit.

  4. #4
    60% of the time, it works every time.
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    looks a little cleaner than a kit also.

  5. #5
    USCME's Avatar
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    Quote Originally Posted by upgraded View Post
    looks a little cleaner than a kit also.
    I agree, if you clean the shoe prior to filling it with the resin and scuff the inner area of the cavities a little bit to promote adhesion, it will come out really well. You can't beat how the liquid resin fills every void perfectly, no need to put adhesive on preformed pieces that probably don't match the cavities perfectly and 'seal' them in. I haven't used one of the kits before so I'm not speaking from experience here but I find it hard to beat the fit and finish of the resin when done properly.

    You also can't beat the price, I picked up 32oz of total resin (2 part mix) for $20 from uscomposites which was enough to fill all the voids in the shoe as well as the voids in the transom that mate with the shoe. I know mcmastercarr carries some casting resins too that I'm sure are reasonably priced.

    Assuming my shoe holds up over time, I plan to do any future shoes this way.

  6. #6
    Moderator OsideBill's Avatar
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    I have used it on an SHO and it is holding up so far through this season. John don't forget the rear of the shoe, that large cavity is the most important one.

  7. #7
    smacota1's Avatar
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    Quote Originally Posted by OsideBill View Post
    I have used it on an SHO and it is holding up so far through this season. John don't forget the rear of the shoe, that large cavity is the most important one.
    Yeah,

    Thanks Bill. I had to get some more as I don't think one bottle is enough.

  8. #8
    krispaintballz's Avatar
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    I used it awhile a go on a couple gprs. Great stuff, it is still holding up great. Beats using the ppk. The casting resin fits so much better and I think is lighter and stronger. Just buy two bottles.

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