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Sealing toy blocks

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Forum topic by Rich L. posted 03-08-2018 06:03 PM 315 views 0 times favorited 6 replies Add to Favorites Watch
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Rich L.

33 posts in 2302 days


03-08-2018 06:03 PM

Hello all.

My DIL asked me to make a few toy blocks for my almost two year old grandson. Seems he really likes the ones with the letter U and the two he had have been misplaced. OK no problem I’ll make some and my wife will paint them. I’ll then seal them with seal coat shellac He’s a triplet so I’ll just make a batch of them. They already have blocks but I figure, What the heck?

I made a batch out of 8/4 clear pine. First question: Bad choice? Looks like hardwoods are more popular. Will the pine ones work?

We tested a couple of the blocks. My wife painted on some letters and stamped some images. (ducks etc.) I then dabbed on four coats of Seal Coat. Paint smeared a little but not too bad. (Not too good either. :(
Next question: Should I seal them first then paint them and then seal over the paint? Or should I top coat with something else all together? Time is of the essence so fast curing is the ticket.

Thanks for any input.
Rich L.

-- Rich, Southern CA


6 replies so far

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bilyo

224 posts in 1127 days


#1 posted 03-08-2018 07:03 PM

I don’t have a huge amount of experience with putting shellac over paint, but I am surprised that you had that problem. What kind of paint are you using? Are you sure it is completely dry? Rather than dabbing on the shellac, I would try using a aerosol spray can and put a very quick thin coat on first.

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Dustin

530 posts in 765 days


#2 posted 03-08-2018 07:56 PM

^ +1
The denatured alcohol in the shellac can at times cause a little running in paints or stains that you’re sealing (depending upon their makeup). Aerosol cans are cheap, available at about any home center, and are also of the de-waxed variety (at least, the can of Zinnser I got was).

-- "Ladies, if your husband says he'll get to it, he'll get to it. No need to remind him about it every 6 months."

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OSU55

1699 posts in 2014 days


#3 posted 03-09-2018 03:38 PM


are also of the de-waxed variety (at least, the can of Zinnser I got was).

- Dustin

FYI I think this is incorrect. All Zinsser “shellac” in rattle or paint can has wax. Only Sealcoat is dewaxed, and only comes in cans not rattle cans. I could not find it specifically on the website, the shellac tds says not to use under poly which is the clue. The implication here is it may effect the paint adherence if the blocks are sealed first, it may not. Not an issue as a topcoat. If the paint is put over a sealer coat of the shellac, which is then topcoated with the shellac it probably wont matter.

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Rich L.

33 posts in 2302 days


#4 posted 03-09-2018 04:30 PM

Thanks for the input. I soaked some blocks in some Seal Coat (cut 50/50) with alcohol. Then sanded with 0000 steel wool. Much improved over my bare wood blocks. If I can spray over the paint with the waxed spray shellac, that might be the ticket.

The paint that smeared is acrylic from one of the hobby stores.

Thanks again

-- Rich, Southern CA

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Dustin

530 posts in 765 days


#5 posted 03-09-2018 05:36 PM

are also of the de-waxed variety (at least, the can of Zinnser I got was).

- Dustin

FYI I think this is incorrect. All Zinsser “shellac” in rattle or paint can has wax. Only Sealcoat is dewaxed, and only comes in cans not rattle cans. I could not find it specifically on the website, the shellac tds says not to use under poly which is the clue. The implication here is it may effect the paint adherence if the blocks are sealed first, it may not. Not an issue as a topcoat. If the paint is put over a sealer coat of the shellac, which is then topcoated with the shellac it probably wont matter.

- OSU55

Not to argue, but I think this is a true statement only for the liquid-canned variety (when I referred to the can I got earlier, I meant the rattle can; sorry if that was unclear). If you go to home depot’s page and choose the 360 view, you can zoom in on the label where it states, “Because spray shellac is 100% wax-free, it can be used as a sealer…”

I didn’t know this myself, which is why I bought SealCoat when I needed to use a wash coat on my last project. Had I known then that the aerosol can was wax-free, I just would have sprayed it.

-- "Ladies, if your husband says he'll get to it, he'll get to it. No need to remind him about it every 6 months."

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OSU55

1699 posts in 2014 days


#6 posted 03-10-2018 02:13 PM

Looks like you are right. Learn something new every day.

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