Thick resin vs thin resin

[Mr Bill]

I am curious.
Resins come in different thicknesses.
What are the advantages of using 14-15cps resin versus 15-20cps resin?
I even saw a resin that was 1-10cps for long crack repair.
Are the thinner resins more likely to fail over time?
Do thinner resins penetrate cracks easier?
I understand that I still need to use pit filler to finish the repair.
What has your experience been regarding this question?

[Coitster]

Well for long crack repair the thin resins do fail over time. I have come back to long cracks that I fixed 3 or 4 months later and they looked like I never fixed them. Thinner resins just don't have the molecular density to withstand the stress's of a long crack. Thats why you need to use a thick resin.

[Mr Bill]

Thank you.
That is what I needed to know.

[Sneck]

It may depend on the actual resin tensil strength. I personally use Deltas Magnibond resin (as a universal resin) for everything from chips to cracks, then top off with pit filler.

... but thats just my preference and I have had good results.

[toab]

Generally speaking I have found that the thicker resins have a better refractive index/clarity match to glass as well as being stronger.Thats why I never use a star repair thin resin in long crack repair.

[GlasWeldTech]

I ALWAYS use the thickest resin I think will work in a break.

[Jerry Martin]

It may depend on the actual resin tensil strength. I personally use Deltas Magnibond resin (as a universal resin) for everything from chips to cracks, then top off with pit filler.

... but thats just my preference and I have had good results.

What kind of resin do you use for long cracks?