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General control line discussion => Open Forum => Topic started by: Juan Valentin on August 23, 2009, 06:35:55 PM

Title: Polyspan covered flap is fuzzy
Post by: Juan Valentin on August 23, 2009, 06:35:55 PM
 I covered the flaps in my profile P-51B with polyspan and one of them got a fuzzy spot after giving it a coat of SIG lite coat clear with 70%thinner. I had given the flaps about 3 coats of nitrate and 2 coats of lite coat clear with talc brushed on.Should I brush on more lite coat clear in the fuzzy spot intead of spraying it?  How many coats of paint will it take to get rid of the Fuzz?
                                                                                       Juan
Title: Re: Polyspan covered flap is fuzzy
Post by: john e. holliday on August 23, 2009, 07:17:18 PM
Yes, just use more dope as you have sanded thru the layers you have already applied.  DOC Holliday
Title: Re: Polyspan covered flap is fuzzy
Post by: RC Storick on August 24, 2009, 09:34:24 AM
Quote from: Juan Valentin on August 23, 2009, 06:35:55 PM
I covered the flaps in my profile P-51B with polyspan and one of them got a fuzzy spot after giving it a coat of SIG lite coat clear with 70%thinner. I had given the flaps about 3 coats of nitrate and 2 coats of lite coat clear with talc brushed on.Should I brush on more lite coat clear in the fuzzy spot intead of spraying it?  How many coats of paint will it take to get rid of the Fuzz?
                                                                                       Juan

If the spot is small use Thin CA and then dope over it.
Title: Re: Polyspan covered flap is fuzzy
Post by: Juan Valentin on August 24, 2009, 11:38:53 AM

   Thanks for the advice jhon and robert. It is a small spot, guess I over did the sanding. I thought that I had filled the polyspan with the nitrate brushing it on and rubbing it in with my finger but it looks like I didn`t fill all the weave.
                                                       
                                                                                     Juan
Title: Re: Polyspan covered flap is fuzzy
Post by: James C. Johnson on August 24, 2009, 11:46:16 AM


I have used Brodak Primer also.. but it weighs more so use sparingly.. and let it dry well before sanding.. go with dope first..

Jim
Title: Re: Polyspan covered flap is fuzzy
Post by: Balsa Butcher on August 24, 2009, 11:58:05 AM
One of the wonderful things about Polyspan is if you sand through the plastic top coat the fibers below sprout out like whiskers. Further sanding just compounds the problem. Good suggestion to fill with CA. I have not tried that and have had to live with some places on my plane looking like they need a shave. 8)
Title: Re: Polyspan covered flap is fuzzy
Post by: RC Storick on August 24, 2009, 01:15:18 PM
Quote from: Pete Cunha on August 24, 2009, 11:58:05 AM
One of the wonderful things about Polyspan is if you sand through the plastic top coat the fibers below sprout out like whiskers. Further sanding just compounds the problem. Good suggestion to fill with CA. I have not tried that and just go with some spots on my plane looking like it needs a shave. 8)

I use Pollyspan and I paint fair, this is what I use when a fuzz problem arises.
Title: Re: Polyspan covered flap is fuzzy
Post by: Balsa Butcher on August 25, 2009, 11:31:22 AM
I'll defintely try this technique the next time my polyspan sprouts sanding whiskers...thanks! 8)