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Building Tips and technical articles. => Paint and finishing => Topic started by: Paul Taylor on July 26, 2011, 07:02:18 PM

Title: Blushing while putting on first few coats of clear.... will it matter?
Post by: Paul Taylor on July 26, 2011, 07:02:18 PM
I put on a few coats of clear on my flaps. Man is it hot and muggy out!!!

Any way I assume this is what is known as blushing.

Will this hurt if I am going to put silk span on top of this?
Title: Re: Blushing while putting on first few coats of clear.... will it matter?
Post by: Wynn Robins on July 26, 2011, 08:58:32 PM
nope -not if it is under your covering - no pic attached - was there supposed to be?

Title: Re: Blushing while putting on first few coats of clear.... will it matter?
Post by: Paul Taylor on July 26, 2011, 09:13:41 PM
Thanks Wynn,

Sorry brain fart.
Here is the pic
Title: Re: Blushing while putting on first few coats of clear.... will it matter?
Post by: Allan Perret on July 27, 2011, 05:57:03 AM
Could be, but does not look like typical blushing, especially the sharp definition on bottom end in picture.  Not sure what you got here.  Dont be concerned about blushing untill you get to final clear coats. 

I would not be spraying at this stage of process.  Easier and faster to build substrate and fill covering with a brush.
Title: Re: Blushing while putting on first few coats of clear.... will it matter?
Post by: Paul Taylor on July 27, 2011, 06:47:26 AM
Thanks Allen
That sharp edge you point out could be from the foam brush. Maybe I went across the flap with a stroke?
Title: Re: Blushing while putting on first few coats of clear.... will it matter?
Post by: Bootlegger on July 27, 2011, 06:48:32 AM
Allen Perret, Do you have a set of '67 Green Box Nobler plans?
 I need a wing plan set.
          Thanks, Gil
(H) 225 658 6139  (C) 225 301 7061
Title: Re: Blushing while putting on first few coats of clear.... will it matter?
Post by: larry borden on July 27, 2011, 05:36:11 PM
I use Randolph dope almost exclusively now and spray with about a 50/50 mixture. I don't worry about the blusing until time to spray clear coat. I use Brodak's crystal clear, ok I don't use Randolph exclusively, and mix 25% dope and rest thinner and retarder. The first few coats, I just give it a light mist so the inkjet decals and vinyl graphics don't mess up. After these coats, I spray a couple of wet coats to seal all decals, striping etc., the thinned clear will take out the blush. But I usually try to spray in the early morning to get away from the humidity. If this fails, I have an air conditioned shop and I bring it inside for the final coat.
Title: Re: Blushing while putting on first few coats of clear.... will it matter?
Post by: Wynn Robins on July 27, 2011, 06:21:37 PM
Allen Perret, Do you have a set of '67 Green Box Nobler plans?
 I need a wing plan set.
          Thanks, Gil
(H) 225 658 6139  (C) 225 301 7061

i have these plans in PDF format - do you want me to send em to ya?
Title: Re: Blushing while putting on first few coats of clear.... will it matter?
Post by: Peter Nevai on July 28, 2011, 02:47:11 PM
I find that a cool moist towelette applied to the face relieves bushing quite satisfactorily.
Title: Re: Blushing while putting on first few coats of clear.... will it matter?
Post by: David Murrell on August 02, 2011, 02:01:18 AM
Try adding Butyl Acetate as a thinner, stops all but the worst blushing. If you have already got a few coats of dope on don't panic, just make a 75% Butyl Acetate/25% dope and do another coat. Magic.

Cheers

Title: Re: Blushing while putting on first few coats of clear.... will it matter?
Post by: Allan Perret on August 02, 2011, 06:30:23 AM
Try adding Butyl Acetate as a thinner, stops all but the worst blushing. If you have already got a few coats of dope on don't panic, just make a 75% Butyl Acetate/25% dope and do another coat. Magic.
So where do you buy it ?  Price ?