Crack expander

Post your windshield repair tips, questions, advice! Note there is a sub-forum specifically for business development questions.
Post Reply
chad
Junior Member
Posts: 5
Joined: June 12th, 2015, 8:57 am
Enter the middle number please (3): 3
Has thanked: 0
Been thanked: 0

Crack expander

Post by chad » August 18th, 2017, 7:47 am

Anyone use a crack expander to fill in a star break that has long legs( like 1.5 inch legs) that seem to long for just the tool? Thanks
Top
screenman
Senior Member
Posts: 3192
Joined: February 25th, 2004, 1:44 pm
Enter the middle number please (3): 5
Location: uk Lincolnshire
Has thanked: 73 times
Been thanked: 134 times

Re: Crack expander

Post by screenman » August 20th, 2017, 12:47 am

I tried one 25 years or more ago, I have not used one since.
Top
Clarity Glass
Member
Posts: 169
Joined: December 9th, 2003, 1:00 pm
Enter the middle number please (3): 5
Location: Vancouver,WA.
Has thanked: 5 times
Been thanked: 14 times

Re: Crack expander

Post by Clarity Glass » August 21st, 2017, 8:12 pm

Shouldn't need to use crack expander unless the crack leg is tight. Carefully flex/put pressure on crack watching the resin flow to crack tip.
Top
screenman
Senior Member
Posts: 3192
Joined: February 25th, 2004, 1:44 pm
Enter the middle number please (3): 5
Location: uk Lincolnshire
Has thanked: 73 times
Been thanked: 134 times

Re: Crack expander

Post by screenman » August 21st, 2017, 10:14 pm

It does of course matter if the leg is surface or sub surface, pressing on a surface crack will often close it up, whilst subsurface will open it.
Top
IRONSIDE
Junior Member
Posts: 12
Joined: December 7th, 2017, 6:45 pm
Enter the middle number please (3): 3
Has thanked: 10 times
Been thanked: 3 times

Re: Crack expander

Post by IRONSIDE » May 7th, 2018, 5:52 am

Is there any information on at what length a crack changes from sub-surface to a surface crack?
Top
screenman
Senior Member
Posts: 3192
Joined: February 25th, 2004, 1:44 pm
Enter the middle number please (3): 5
Location: uk Lincolnshire
Has thanked: 73 times
Been thanked: 134 times

Re: Crack expander

Post by screenman » May 7th, 2018, 9:59 pm

Just drag your scribe across the top you will here a click if it is surface.
These users thanked the author screenman for the post:
IRONSIDE (May 8th, 2018, 1:36 pm)
Rating: 25%
Top
Post Reply

Return to “Windshield Repair”

Who is online

Users browsing this forum: Bing [Bot] and 2 guests