Sealing with Polyurethane sealent?

mahomedy13 · Feb 1, 2015

I decided to seal my new blade,so that it doesnt splinter when changing rubbers.

So,will a polyurethane spray seal it well,or is it too strong for the wood(meaning will it make it too stiff).

TIA

Der_Echte · Feb 2, 2015

I use "Mini Wax" which is a polyurethane product.

You gotta go light on the stuff. You can use very thin coats. Too much and you get a harder feel.

Baal · Feb 2, 2015

I ruined a blade with polyurethane. Be very very very careful. It penetrates deep and is very hard when it cures.

Der_Echte · Feb 2, 2015

Yup. Stimmt. It doesn't take much at all and it is real easy to over-do it. I use thin and go quick. There is the temptation to go for a lot, because you really do not see much a result right away, but the stuff doesn't need much to do the job.

mahomedy13 · Feb 2, 2015

i have a can that sprays it out,so it is easy to get a light coat on.

Thanks for the help

haggisv · Feb 2, 2015

I use it regularly, but only a very thin coats as others have already suggested. Unlike the TT sealers that are sold, the polyurethane is waterproof, although such a thin layer will only offer some protection against water.

I'm not sure if a spray can will help. Perhaps spray on a little then spread it out with a cloth, because you really don't want a full layer on top of the wood, as it will no doubt harden the feel of the blade.

Der_Echte · Feb 2, 2015

Spray on is asking for trouble with a capitol T. PolyU is very runny in can and it only takes a dab or two on a clean lint free cloth to get a thin coat on one side with control. Spraying on is impossible to control finely.

mahomedy13 · Feb 2, 2015

i did test on a spare blade,and when i tried to see the layer,it was impossible.(i sprayed from about 40cm above the blade).will post a picture later today.

UpSideDownCarl · Feb 2, 2015

What you want is something like "MinWax Wipe on Poly". It is very thin and you wipe on a very thin layer with a cloth.

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Der_Echte · Feb 2, 2015

That is exactly the one I use, it comes in a real tiny can, like 1/4 pint or 1/2 pint, forget, but it doesn't take much at all and it dries fast enough. I also use it for other wood projects, I just replaced the shelf under my well water storage tank using 3/4" wood that I did 3 coats of the Miniwax and that sucker is gunna last for years now.

mahomedy13 · Feb 2, 2015

UpSideDownCarl said:
What you want is something like "MinWax Wipe on Poly". It is very thin and you wipe on a very thin layer with a cloth.

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Ive searched the local 'walmart' for that specific name.unfortunately,they dont have it,so i had to buy another locally made one(the 1 in the spray can).

Also,the drying time is 6 hours,so maybe it is too strong?

The next option i got is to spray some onto a cloth,then spread it.

UpSideDownCarl · Feb 2, 2015

I would do a search on line for "MinWax Wipe on Poly". It is inexpensive. The jar I have has lasted about 5 years so far and I have sealed at least 50 bats to perfection.

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haggisv · Feb 2, 2015

It seems Minwax is not commonly available everywhere, as I've not seen it in Australia. Still there are plenty of other good ones.

UpSideDownCarl · Feb 3, 2015

haggisv said:
It seems Minwax is not commonly available everywhere, as I've not seen it in Australia. Still there are plenty of other good ones.

Oh well. I thought they could ship it anywhere but I guess the real idea is to find a polyurethane sealant that is made to be thin because it has more solvent in it and is made to be applied with a cloth rather than with a brush. Those two things, that it is super thin and liquidy and is meant to be applied with a cloth make it so you can get a very thin coat. And that is all you want.

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haggisv · Feb 3, 2015

I've used a water-based polyurethane sealer before as well, but it was only available in larger tins, so this seemed a bit of a waste. It seemed to work fine as well, and of course no nasty fumes and easier to clean up.

Sealing with Polyurethane sealent?

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