Replaced a 30 year old electric cooktop about 18 months ago with a
smooth ceramic one. Had trouble at the time finding a cooktop that
would fit in the oversized hole. Eventually ended up with Kitchenaid
that had a 1/4-3/8" overlap around all four sides. Yesterday it
cracked all the way across the short edge after a timer dropped onto
one corner. Question is: could the glass have had undue stress from
the weight load on the small overlap, making the crack likely to happen
again with the slightest drop? Was this a crack waiting to happen? We
have to decide whether to replace the glass (about $300) or go back to
an electric coil cooktop for about the same amount. Anyone have
experience with this?
I'd take a look at what the install guide says the minumum support
around the edges should be and I'll bet it's probably more than 1/4".
Usually, the only problem with a hole too large is if the appliance
going in can't cover it up for appearance purposes. If it covers it
like here, then it's usually easy to install some additional support
from below that will fill in the rest of the oversize hole to give the
required support. That's what I would have done.
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