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I'm ruining my finish by wrapping too quickly

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Forum topic by Rob posted 11-09-2015 07:20 PM 760 views 0 times favorited 11 replies Add to Favorites Watch
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Rob

216 posts in 3134 days


11-09-2015 07:20 PM

I’ve been selling some items and wrapping in bubble wrap for shipping. I notice that after some time in the wrap its marred the finish. I used poly acrylic on this.

On another one I wrapped a painted item in wax paper. It is messed up as well.

I’m very frustrated. How long do I need to wait? Or is there a better way to ship?


11 replies so far

View MrUnix's profile

MrUnix

4242 posts in 1666 days


#1 posted 11-09-2015 07:33 PM

The longer the better :) You might try wrapping the piece in parchment paper first… I haven’t yet found anything that sticks to that stuff.

Also, most finishes have a ‘window’ for recoating, and if you miss it, you have to wait a specified time before putting on another coat. I usually take that as the minimum time required for a full cure, and it varies from finish to finish. According to the literature for Polycrylic, it says to recoat within 1-1/2 hours, otherwise you need to wait 72 hours before applying another coat. To me, that means that it takes at least 72 hours for a full cure – longer would be even better.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

View bearkatwood's profile

bearkatwood

1214 posts in 478 days


#2 posted 11-09-2015 07:39 PM

“Death is gods’ way of saying slow down” from Patch Adams.
I wouldn’t say slow down that much, but it seems like you are in a hurry to get it out the down. Give it an extra day or two. They can wait I’m sure.

-- Brian Noel

View Fred Hargis's profile

Fred Hargis

3949 posts in 1960 days


#3 posted 11-09-2015 08:12 PM

I have another point to ponder. Plastic anything has elasticizers in them to keep the plastic soft and supple, obviously this varies widely by plastic. If you fish, and bought some of the early plastic tackle boxes introduced, you may have noticed the plastic worms laying in a tray would, well, become one with the tackle box. The revised tackle boxes were labeled “worm safe” for a long time. At a lower level, this can happen with a lot of plastics currently being marketed…we had a cheap phone on one nightstand and the little plastic pads on it left blacks circles all over the top. Anyway, to be safe consider using Brad’s suggestion of wrapping in paper before you put it in bubble wrap. If the finish is dry I think just tissue paper would be a good precaution, but if you think it isn’t the parchment paper might be a better barrier between the plastic and the finish.

-- Our village hasn't lost it's idiot, he was elected to congress.

View Daruc's profile

Daruc

459 posts in 599 days


#4 posted 11-09-2015 08:23 PM

Better material to finish with.
That’s why I like pre-cat lacquer,
you can spray it today and stretch wrap it tomorrow and it doesn’t stick.

-- -

View AlaskaGuy's profile

AlaskaGuy

2406 posts in 1776 days


#5 posted 11-10-2015 08:28 AM



Better material to finish with.
That s why I like pre-cat lacquer,
you can spray it today and stretch wrap it tomorrow and it doesn t stick.

- Woodust

What kind of environment can you spray that stuff in, do you need a spray booth? Spark proof lights and all that stuff so you don’t blow your self up?

-- Alaskan's for Global warming!

View Jarrett's profile

Jarrett

70 posts in 594 days


#6 posted 11-10-2015 11:27 AM

As long as you have adequate ventilation and keep your spray booth quite a few feet away from the woodstove, you will do just fine. Perfect world, you would have seperate finishing room. Not so perfect world, throw drop cloths down on anyting you don’t want overspray on. I’m cheap, but I’ve had great sucess with Harbor Freight hvlp gun, even shooting the cheap poly acrylic available at big lumber box stores. I can shoot a finish coat in morning and ship in early afternoon if I had to. Its amazing how much faster and how much better the finish is when sprayed with gun…also how little finish you use. Your profit will skyrocket between the time you save spraying it with gun and how little finish is needed when spraying. Just be sure you have filters on comoressor and gun! When you get a chance, order some non Minwax finish if you don’t already, and you’ll see a huge difference…Minwax is pretty basic to put it nicely.
Good luck!

-- Jarrett http://www.cattywampuswoodworks.com

View fisherdoug09's profile

fisherdoug09

121 posts in 2141 days


#7 posted 11-10-2015 11:42 AM

I had the same problem with the boxes I make. I finish mine with Danish oil and then a coat of wax. I have started wrapping the boxes with tissue paper then with bubble wrap seems have cured the problem.

View helluvawreck's profile

helluvawreck

23199 posts in 2333 days


#8 posted 11-10-2015 03:16 PM

So far it hasn’t happened to me but it makes me nervous. I hope that you get it solved.

helluvawreck aka Charles
http://woodworkingexpo.wordpress.com

-- If a man does not keep pace with his companions, perhaps it is because he hears a different drummer. Let him step to the music which he hears, however measured or far away. Henry David Thoreau

View Rob 's profile

Rob

216 posts in 3134 days


#9 posted 11-11-2015 12:04 AM



So far it hasn t happened to me but it makes me nervous. I hope that you get it solved.

Fortunately they were quick fixes. I sanded the acrylic one with 2000 grit and the marks went away quickly. And with the painted project I gave it another coat of clear and it evened things out.

View Daruc's profile

Daruc

459 posts in 599 days


#10 posted 11-11-2015 04:18 AM

Better material to finish with.
That s why I like pre-cat lacquer,
you can spray it today and stretch wrap it tomorrow and it doesn t stick.

- Woodust
What kind of environment can you spray that stuff in, do you need a spray booth? Spark proof lights and all that stuff so you don t blow your self up?

- AlaskaGuy

No, just the same common sense you would use if you were going to spray any other solvent based material.

-- -

View trevor7428's profile

trevor7428

149 posts in 427 days


#11 posted 11-11-2015 05:30 AM

Hey Jerrett,

What is the model # for the Harbor Freight Spray Gun you use? Also what PSI do you use going to the gun.

I had a bad experience the first time I tried to spray finish. It seemed like to much of the polyurethane was coming out of the gun at once. Idk if it was the PSI or nosel hole too big? I first tried 30 PSI then 20 PSI. Then packed the gun back in the box and returned it lol. (Of course cleaning it first)

-- Thank You Trevor OBrion

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