Flush mount cooktop gap

[GanassaWMG]

Hello everyone,

Can anyone tell me what the tolerance is for a flush mount cooktop? I have a customer who is not happy with the 1/8" gap on all 4 sides of her cooktop, my first thought is that we can use silicone to fill the gap. Its obviously very tricky to get a prefect fit but perhaps the gap should have been closer to a 1/16"?
Would it be acceptable to use the 1/8" gap and use silicone to cover?

Thanks

[Mark Meriaux]

Manufacturer should have cutout specs with suggested spacing.
I just looked at Miele for an example, and the model I looked at (KM 6375) shows 1/8" overall (1/16" all around) larger than the cooktop surface.

[GanassaWMG]

Thanks Mark, I did the same. They say there is supposed to be a 1/16" gap with some variance. The gap we have is closer to an 1/8". A little big but I have to explain to the client it is normal I suppose.

[Darryl Miller]

I leave 1/16" all the way around, no more than that.

[mspencer]

We leave 1/16" all the way around. We have found that most customers will not accept anything bigger than that.

[Mitch@ASW]

We ran into this a while back, the display had 0 gap but we followed the manufacturer's guidelines and left an 1/8 to be siliconed as per instructions. Custy was not happy and the appliance rep called to see if we could do the silicone...

[ThomasGraniteTopsIRE]

2mm gap all around. Always talk people out of it. If they are adamant we show them this picture and get them to sign an acknowledgment that there will be a 2mm gap on all sides.

[gssfabrication]

2mm = ~0.0787" = ~1/16" strong

(I had to look it up as I could not remember my mm-math)

Rick.

P.S. Wow that was off before! Thanks Lester!

[CustomMarbleGranite]

2mm = ~0.787" = ~1/16" strong

(I had to look it up as I could not remember my mm-math)

Rick.
[

.0787
Don’t offset .787
That would be a big gap

[olesmokin]

Is there a bit that would work for a basic wood router to dado that out.. I have to flush mount a piece of glass 1/4 by 1/4 and looking for suggestions on the best way to do this. I have never done this before? I do not have a cnc machine so it would be done manually...I have considered cutting with a grinder blade but not sure how to get the corner squared up?

[colin]

I squared the corners of the last one we did with a dremel with a little diamond blade on it. A wood router? is it soapstone? if it is then yes, use a carbide bit and a router. use a straight edge as a guide. if its granite or similar then you could use an alpha hand saw for the majority of it to cut the shape, a grinder to remove whatever is left inside that, and finish the corners with a dremel.

[Coop]

Festool rail saw with a fresh diamond blade. Excellent dust collection and very precise. Dremel the corners.

[Angel]

you can cut the corners completely out with a blade. theres really no need to dremel. They will be covered

[Mark Meriaux]

Use a saw blade for the straight sides and set up a guide fence.
I've used a 1" diameter vacuum brazed drum wheel on a base-mounted grinder (Galeski, but any one with depth setting would work). This works great on the corners.

Make sure the drum has diamonds on the nose/end of the bit. I think I got them from Helix years ago.