TravcoForum.com

Travco Classic Motorhome Support & Discussion Forum

Skip to content

Change font size

Board index » Exterior » Body, Paint Gelcoat specific

cracking/crazing treatment

Unread postby rjsdotorg on Wed Feb 14, 2018 7:00 pm

Now underway.
I belt sanded the crazed gelcoat (the whole stripe) with a 4" x 24" belt sander and 36 grit.
Rinsed and wiped dry.
Now applying 1.5oz glass cloth 18" wide around the whole rig. The stuff is thin as silk and still should prevent later crack print-through in the marine paint.
IMG_5374.JPG

I thinned the resin ~5% and brushed from the centers of the cloth outward (it's been a while since doing glass).
I tried brushing the surface first then laying on the cloth and it didn't go well; just tack the cloth up with tape or a spritz of spray adhesive and brush it on top.
Not worried about wrinkles etc as they'll sand off and this is only about the fine cracks.
After spreading the resin, hard, the thickness is ~1mm.
2oz would be fine too. There is 3/4oz available but that would be crazy to work with.
IMG_5375.JPG


You can see the ribs in the right light, and the whole thing is wavy, so absolute flatness is actually not desired.
You do not have the required permissions to view the files attached to this post.
rjsdotorg
Senior Contributor
Senior Contributor
 
Posts: 117
Joined: Sun Dec 24, 2017 1:37 pm
Travco Model: 1972 270

Re: cracking/crazing treatment

Unread postby rjsdotorg on Wed Feb 14, 2018 7:03 pm

Also did the center joint delete, with 6oz glass5" wide.
Still needs fairing, as will the side stripe.
You do not have the required permissions to view the files attached to this post.
rjsdotorg
Senior Contributor
Senior Contributor
 
Posts: 117
Joined: Sun Dec 24, 2017 1:37 pm
Travco Model: 1972 270

Re: cracking/crazing treatment

Unread postby rjsdotorg on Fri May 18, 2018 11:30 pm

A few updates:
You do not have the required permissions to view the files attached to this post.
rjsdotorg
Senior Contributor
Senior Contributor
 
Posts: 117
Joined: Sun Dec 24, 2017 1:37 pm
Travco Model: 1972 270

Re: cracking/crazing treatment

Unread postby rjsdotorg on Fri May 18, 2018 11:31 pm

blue on
Pettit Bikini Blue
You do not have the required permissions to view the files attached to this post.
rjsdotorg
Senior Contributor
Senior Contributor
 
Posts: 117
Joined: Sun Dec 24, 2017 1:37 pm
Travco Model: 1972 270

Re: cracking/crazing treatment

Unread postby rjsdotorg on Fri May 18, 2018 11:32 pm

tape off
You do not have the required permissions to view the files attached to this post.
rjsdotorg
Senior Contributor
Senior Contributor
 
Posts: 117
Joined: Sun Dec 24, 2017 1:37 pm
Travco Model: 1972 270

Re: cracking/crazing treatment

Unread postby rjsdotorg on Fri May 18, 2018 11:34 pm

Raod -legal trim back on
new mirrors
vent doors cleaned up
You do not have the required permissions to view the files attached to this post.
rjsdotorg
Senior Contributor
Senior Contributor
 
Posts: 117
Joined: Sun Dec 24, 2017 1:37 pm
Travco Model: 1972 270

Re: cracking/crazing treatment

Unread postby rjsdotorg on Fri May 18, 2018 11:37 pm

tail lights cleaned up pretty well too
You do not have the required permissions to view the files attached to this post.
rjsdotorg
Senior Contributor
Senior Contributor
 
Posts: 117
Joined: Sun Dec 24, 2017 1:37 pm
Travco Model: 1972 270

Re: cracking/crazing treatment

Unread postby rjsdotorg on Fri May 18, 2018 11:46 pm

Suggestions to anyone attempting this:
  • use guide coat
  • use 18" blade and pull two layers of putty in cross directions
  • use guide coat, seriously. Or at least a gloss coat of some sort
  • look at it at all times of day in the sun, it will show defects with different sun angles
  • The Pettit Ex-Poxy is easy to use, follow directions, and use their high-build primer. I've painted a number of boats with it outdoors
  • use original 3M blue tape, or Frog tape
  • I spent 50 hours+ sanding and filling, and taping, actual paint is only about 3 including clean-up
  • practice on the A/C shroud
You do not have the required permissions to view the files attached to this post.
rjsdotorg
Senior Contributor
Senior Contributor
 
Posts: 117
Joined: Sun Dec 24, 2017 1:37 pm
Travco Model: 1972 270

Re: cracking/crazing treatment

Unread postby 77Travco on Tue May 22, 2018 8:48 am

Wow, that's looking pretty good! You even put the Travco logo on the side! :D
User avatar
77Travco
Moderator
Moderator
 
Posts: 1225
Joined: Sat Jan 26, 2013 2:32 am
Location: Kerrville, Texas
Travco Model:


Return to Body, Paint Gelcoat specific

Who is online

Users browsing this forum: No registered users and 1 guest