Composites Central


Reply
Old 10-23-2016, 06:03 PM   #51
dallasb84

Composites Expert
 
Join Date: Jul 2004
Location: va
Posts: 709
Thanks: 23
Thanked 39 Times in 36 Posts



Send a message via Yahoo to dallasb84
Default

Very sorry about your results. They do look typical though. Those look like pinholes from the weave and the clear is sinking in. Before clearing I went to wiping the part with water after sanding. Then blowing the surface with compressed air. The water would stream out from the holes and tell me where they were. I'd circle the problem areas with a grease pencil and blade in 5minute epoxy. Sand and repeat. Then clear coat.

I've had alot of problems with IMC so this became my best practice for small run one off parts that needed to work first try.
dallasb84 is offline   Reply With Quote
Old 10-24-2016, 02:23 AM   #52
hojo

Forum Donor
Composites Expert
 
hojo's Avatar
 
Join Date: Oct 2006
Location: Shanghai, China/Maine, USA
Posts: 1,411
Thanks: 17
Thanked 84 Times in 75 Posts



Default

Duratec sunshield works good for this problem (much better than clear coat). Apply a medium coat, take a brush over the surface to remove the pinholes. Follow up with one or two more medium coats, waiting a few minutes between coats to allow for solvent to evaporate. After sand surface down and either do a thin down sunshield coat (harder surface than clear coat), or clear coat surface as normal. Shouldn't have any pinholes after..
hojo is offline   Reply With Quote
Reply

Bookmarks

Tags
finish, mold

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -8. The time now is 04:34 AM.
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

Inactive Reminders By Icora Web Design