White haze & 2 part epoxy?
- Thread starter Gabericks
- Start date
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Woodchipper
Member
Do you paint the hole in the blank? I skipped on recently but the brass fit in with the overall colors of the blank.
duncsuss
Member
A friend who made arrows for archery recommended DevCon 2-ton epoxy. I've used it for years without a problem, since I always let parts cure overnight anyway I don't need the quick cure of CA glues (or 5-minute epoxy).
Gabericks
Member
Ok, that's a new one. Paint it how
Ok that's a new one. Paint it how? Spray paint?
Woodchipper
Member
Spray paint. I have to do it outside with a quick shot in both ends; wear disposable gloves. Tried the Q tip and acrylic paint. Tube scraped off part of the paint. A YouTube video showed the effect with black and white paint on the same blank material. World of difference.
Edit: used Devcon two part epoxy to build golf clubs. Takes a lot of punishment. Got two 4 oz. bottles off Amazon.
Edit: used Devcon two part epoxy to build golf clubs. Takes a lot of punishment. Got two 4 oz. bottles off Amazon.
jttheclockman
Member
Here is an example of black and white spray paint used in the same blank material. Changes the look completely. Always a good idea to paint the inside of the blank especially acrylic blanks.
Brian G
Member
I'm troubled by all the air bubble pockets (the little white circles) in a blank you purchased. That's a casting flaw. An occasional bubble sometimes happens, but anybody who is selling blanks should be notified of that many, and you should receive a replacement or a refund.
What I'm seeing might not be an issue with your preparation. That grayish base color for epoxy should be opaque enough in this instance that the tube should not show through. I speculate this is the result of the maker not mixing the base color well enough (used white and black to make gray), and the white colorant is the culprit.
I don't cast for dough, and prefer to not criticize other casters. I'd be embarrassed if a blank like that left my shop, and I'd certainly want to know if it did so I could make it right.
What I'm seeing might not be an issue with your preparation. That grayish base color for epoxy should be opaque enough in this instance that the tube should not show through. I speculate this is the result of the maker not mixing the base color well enough (used white and black to make gray), and the white colorant is the culprit.
I don't cast for dough, and prefer to not criticize other casters. I'd be embarrassed if a blank like that left my shop, and I'd certainly want to know if it did so I could make it right.
Woodchipper
Member
Looking for the video that has comparisons for painting the tube and painting the blank.
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Gabericks
Member
You are the only person to figure this out. Yes, it's air bubbles. Thank you so much!
Brian G
Member
You're welcome. It can be salvaged, but it will be a lot of fussy work. I had a bubble problem with a casting of my own. I sanded below final fit and used stick pins, a dental pick, DNA, and a toothbrush to clean all the sanding dust. I used GluBoost ultra thin to fill them, built up a topcoat past final fit, and then followed my usual finish process.
Ordinarily, I wouldn't mess around trying to salvage a self-cast blank with many air bubble flaws. I liked the blank too much to turn it off and salvage the tubes.
I encourage you to address the flawed blank with the maker. They need to know their product or casting technique needs improvement.
I absolutely agree with Brian G on this! I had a similar experience with a blank with a bunch of tiny bubbles. Most were fixable as Brian noted with CA, but some were in the threaded areas (It was a kitless pen) which was more difficult to deal with. I contacted the seller and he promptly sent me a replacement.