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Wax not separating from shellac mix

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Forum topic by ShawnSpencer posted 01-20-2015 02:41 PM 875 views 0 times favorited 5 replies Add to Favorites Watch
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ShawnSpencer

81 posts in 1007 days


01-20-2015 02:41 PM

Topic tags/keywords: question finishing shellac dewaxing

I have some Lemon shellac flakes and mixed up a batch. I let it sit for about a week or 2. Then, poured off the good stuff. This was about a 1lb cut for a seal coat.

I tried to do the same for a 2lb cut but, it is not separating. It has been sitting for about 2 weeks and there is only about a 1/16 of an inch of transparent shellac at the top. Is there another dewaxing method I can try? I tried some paint filters but they only catch the big dirt particles. I know my mix was free of water. I can try and get some pics up later if that would help.

-- I know you know...


5 replies so far

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jdh122

879 posts in 2283 days


#1 posted 01-20-2015 04:44 PM

I’ve never tried to dewax shellac myself so can’t offer specific advice on that. But you can buy lemon shellac in both waxed and dewaxed versions. It seems like the wax always separates from the shellac in alcohol, so if this didn’t happen my first guess would be that you have dewaxed shellac already.

-- Jeremy, in the Acadian forests

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ShawnSpencer

81 posts in 1007 days


#2 posted 01-20-2015 05:15 PM

It has wax in it for sure. In the first batch, the mix looked very cloudy and after letting it sit the cloudy waxy portion settled to the bottom leaving me with a nice transparent golden amber shellac. I have sucessfully dewaxed the amber Zinser in the past with the same method. This new mix is just cloudy. More so at the bottom after settling but, there is really no transparency in it at all. My only guess is that these flakes contain so much wax that the amount of achohol isn’t enough to get a separation. I don’t even know if that is possible. My next step is to try some everclear instead of home depot denatured alcohol. And also try a coffee filter. I have read (after extensive googling) that freezing the mix causes the wax to freeze and clump but not the alcohol due to different freezing points. Then, filter the clumps. I’m worried freezing will mess up the mix some how though.

-- I know you know...

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Loren

8311 posts in 3113 days


#3 posted 01-20-2015 06:43 PM

I think you’ll just have to be patient.

You can mix more alcohol in to thin it out if you think
the wax will settle faster that way, then after dewaxing
let the excess alcohol evaporate to get the cut you
want… kind of wasteful but I think it will work.

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ShawnSpencer

81 posts in 1007 days


#4 posted 01-20-2015 07:07 PM



I think you ll just have to be patient.

You can mix more alcohol in to thin it out if you think
the wax will settle faster that way, then after dewaxing
let the excess alcohol evaporate to get the cut you
want… kind of wasteful but I think it will work.

- Loren

Thanks for the coment. This batch has been sitting for 2 weeks without any real separation. Is it common to take longer than that? The other batch showed seperation after a day or 2 and consistently separated more as the week went on. This has looked almost the same other than some grit and stuff settling to the bottom.

-- I know you know...

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Dallas

3599 posts in 1952 days


#5 posted 01-20-2015 07:43 PM

I don’t know if this would work or not, but it might be worth a try.

As a truck owner and driver we always needed to be careful to NOT let our fuel wax in cold weather. It would actually gel and cause a horrible problem involving wreckers, heated shops and large invoices.

We added alcohol, (93% pure), along with No. 1 diesel and even kerosene at times.

I wonder if chilling the shellac in a freezer for awhile would allow the wax to coagulate and sink to the bottom?

Again, I’m just thinking outloud.

Maybe you could try a small bit and see what happens.

-- Improvise.... Adapt...... Overcome!

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