I have always stop drilled and anchored first. I then migrate the crack into the anchor. You can use your crack expander/'s or go by feel to migrate it. This should surface the crack. I then would repair from the highest point of the crack down using your crack expander /'s. Sort of like a gravity feed. Although the resin is under pressure and being forced things are easier to push downhill. The rest is also like previously mentioned by Grace.

I have heard of tech's that do not stop drill cracks. I do not know how this technique preformed. I have a hard time agreeing with this method due to my background in aviation. You always stop drill cracks to relieve stress. Aluminum is more flexible than glass and less brittle so it only makes sense to stop drill glass to relieve the stress. Vehicles are always under torsional stresses which are transmitted to and through the windshield. You will have to make your own judgement call here. What ever method you choose is fine if it is working for you. Your tooling might play a deciding role in what method is best for you also. The most important factor for us all is getting the crack completely filled and cured properly for customer safety. I hope this helps.


Pay it foward,

Brian
www.safeglasstechnologies.com

info@safeglasstechnologies.com</p>