What do Bora hob height adjustment plates look like?

[markocosic]

I'll be fitting a (used) Bora hob soon as "flush" mounted in the worktop.

 

I have the official "sealing tape" so hopefully the official dimensions for the rebate are correct. Just in case it sits a little low though...

 

 

...can somebody who has seen these fitted describe that the "height adjustment plates" look like please? (what material, what length/width/thickness and how many?)

 

If it's just e.g. 0.5 mm plastic or soft metal (copper?) spacers I can improvise. 🙂

 

 

Thanks!

 

[markocosic]

I mostly chickened out.

 

But I did partially recess it. These sit on the steel frame bonded to the glass. There's then a seal between the glass and the worktop (plus an additional silicone strip if flushed in)

 

Knock a 1.5 mm rebate in the worktop and you're left with 0.5 mm of silicone and 4 mm of glass; vs 6 mm of glass/steel plus whatever texture the worktop has.

 

Marginal; but you'd be surprised at the difference between 4.5 mm and 6 mm visually.

 

Recessing officially/ properly in laminate means routing out the back of the worktop, casting a rung of resin up to the back of the laminate top in place of the wood, then cutting I to that to mount the hob in a ring of resin. I wasn't that brave/bothered. 4 kg.of epoxy about €80 gets you a 3*4 cm ring fwiw.

 

[markocosic]

Alloy tape avoids gluing the cooker to the worktop (instructions say no) for ease of future servicing.

 

Expansion of borosilicate glass is minimal. 0.8 m length at +100C delta (across the whole thing) gives 0.3 mm expansion. The 0.5 mm thick seal can tolerate 0.15 mm in each direction.

Edited December 28, 2024 by markocosic