Here's the link of my sharing on how I installed my granite sink under-mounted. The contractor brought the sink back to their factory and modified it, sticked it together with the quartz top and it's some sort like making it one piece with the top.
About cracking, i don't think it cracks easily before I get old or move to somewhere else.... Zheilwane's mum showed me a demo on its durability by dropping a solid metal ball around 4-5cm dia. on the sink...they have been doing the same demo for countless times and the sink in their showroom is still ok...


https://forum.lowyat.net/topic/2952544/+700

"interesting episodes" ar?.....

The weight of the sink is not resting on the carcass but supported by the quartz top as it has been made into "one piece" with the quartz. They hacked a bit on the sink skirting to make it not so smooth, then add quartz strips at all four edges to secure the sink with the top.

I really have no idea how to break the granite sink....I've just tried to google "granite sink break" and guess what? Found nothing but a few links about glassware is easier to break when knocking on the granite sink (due to its hardness) compared stainless steel...

Btw, if it really really break, just need to pay a little money, get the quartz/marble guy to cut the sink out. They have the tools.

Thanks for the head up bro! I think you got a point on the wearing-off of the adhesive...
I discussed the matter with my husband and we think we better take your advise to add precaution or as an "insurance"...despite how confident was the assurance from the vendor. It might be looking good now to last for a few years, but we have no idea how will it be after like 5/6 years...
Instead of adding supporting frame, we gonna get some solid wood strips (few inches thickness), and add them along the three edges supporting the skirting strips. This is a small diy job in the plan.
Will post the pics when job is done.

Agreed too!