Hi all,

Got a question for the collective wisdom. My sister and brother-in-law
recently completed a serious kitchen remodel and got an excellent 5
burner gas cook top. Big stainless bed with 3 part cast iron grid over
the top. And one minor design flaw. The cast iron grids stand on the
stainless and have little rubber feet (smell like neoprene) which keep
them from scratching up the stainless. Unfortunately if you crank the
gas up, the transmitted head turns them into vapor. Manufacturer's
answer was to send more feet, with the same characteristics. So I'm
wondering what kind of machinable nonmarring material could replace
them. I cranked out some samples from some delrin I had handy, but it
melted (not surprising - it was just a prototype). Are there any high
tech plastics that would work (probably talking 400 - 500 degrees)? Or
should I just cut to the chase and make them some polished brass feet?

Mac

Jim McGill wrote:
Hi all,

Got a question for the collective wisdom. My sister and brother-in-law
recently completed a serious kitchen remodel and got an excellent 5
burner gas cook top. Big stainless bed with 3 part cast iron grid over
the top. And one minor design flaw. The cast iron grids stand on the
stainless and have little rubber feet (smell like neoprene) which keep
them from scratching up the stainless. Unfortunately if you crank the
gas up, the transmitted head turns them into vapor. Manufacturer's
answer was to send more feet, with the same characteristics. So I'm
wondering what kind of machinable nonmarring material could replace
them. I cranked out some samples from some delrin I had handy, but it
melted (not surprising - it was just a prototype). Are there any high
tech plastics that would work (probably talking 400 - 500 degrees)? Or
should I just cut to the chase and make them some polished brass feet?

PTFE can be usefull up to 500F or so.
Much hotter, and it starts to decompose.
On the "you may already have it" front, silicone sealant may work for this,
though it will go crumbly in a moderately short period.

On Mon, 07 Feb 2005 09:07:38 -0800, the renowned Jim McGill
wrote:

Hi all,

Got a question for the collective wisdom. My sister and brother-in-law
recently completed a serious kitchen remodel and got an excellent 5
burner gas cook top. Big stainless bed with 3 part cast iron grid over
the top. And one minor design flaw. The cast iron grids stand on the
stainless and have little rubber feet (smell like neoprene) which keep
them from scratching up the stainless. Unfortunately if you crank the
gas up, the transmitted head turns them into vapor. Manufacturer's
answer was to send more feet, with the same characteristics. So I'm
wondering what kind of machinable nonmarring material could replace
them. I cranked out some samples from some delrin I had handy, but it
melted (not surprising - it was just a prototype). Are there any high
tech plastics that would work (probably talking 400 - 500 degrees)? Or
should I just cut to the chase and make them some polished brass feet?

Mac

Silicone rubber would probably be okay, assuming you're talking F type
degrees, but I don't know where you'd find molded parts like that

Teflon has already been mentioned. Another machinable material that
might work is polyimide (Vespel & Kapton are trade names). It's rated
for continous service up to around 550°F.

As you can see: http://k-mac-plastics.net/polyimide-rod.htm
http://www.professionalplastics.com/...5585/sesent/00
it's not cheap.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com

In article ,
says...
Hi all,

Got a question for the collective wisdom. My sister and brother-in-law
recently completed a serious kitchen remodel and got an excellent 5
burner gas cook top. Big stainless bed with 3 part cast iron grid over
the top. And one minor design flaw. The cast iron grids stand on the
stainless and have little rubber feet (smell like neoprene) which keep
them from scratching up the stainless. Unfortunately if you crank the
gas up, the transmitted head turns them into vapor. Manufacturer's
answer was to send more feet, with the same characteristics. So I'm
wondering what kind of machinable nonmarring material could replace
them. I cranked out some samples from some delrin I had handy, but it
melted (not surprising - it was just a prototype). Are there any high
tech plastics that would work (probably talking 400 - 500 degrees)? Or
should I just cut to the chase and make them some polished brass feet?


Silicone. Regular GE RTV caulk will tolerate surprisingly high
temperatures. The repair to the silicone door gasket on our convection
oven made with RTV has held for many years. I'd try a button of it as
the foot.

Teflon will go higher, but is difficult to bond without nasty chemicals,
so a mechanical means of fastening would be desirable.

Ned Simmons

Are you sure these feet are not there for shipping and were ment to be
removed before actual use?

Paul

On Mon, 07 Feb 2005 09:07:38 -0800, Jim McGill
wrote:

Hi all,

Got a question for the collective wisdom. My sister and brother-in-law
recently completed a serious kitchen remodel and got an excellent 5
burner gas cook top. Big stainless bed with 3 part cast iron grid over
the top. And one minor design flaw. The cast iron grids stand on the
stainless and have little rubber feet (smell like neoprene) which keep
them from scratching up the stainless. Unfortunately if you crank the
gas up, the transmitted head turns them into vapor. Manufacturer's
answer was to send more feet, with the same characteristics. So I'm
wondering what kind of machinable nonmarring material could replace
them. I cranked out some samples from some delrin I had handy, but it
melted (not surprising - it was just a prototype). Are there any high
tech plastics that would work (probably talking 400 - 500 degrees)? Or
should I just cut to the chase and make them some polished brass feet?

Mac

Go with the brass or a bit of Teflon.

Gunner



" We have all heard that a million monkeys banging on a million
typewriters will eventually reproduce the entire works of
Shakespeare...Thanks to AOL and WebTv, we know this is not possible."

On Mon, 07 Feb 2005 09:07:38 -0800, Jim McGill
wrote:

Hi all,

Got a question for the collective wisdom. My sister and brother-in-law
recently completed a serious kitchen remodel and got an excellent 5
burner gas cook top. Big stainless bed with 3 part cast iron grid over
the top. And one minor design flaw. The cast iron grids stand on the
stainless and have little rubber feet (smell like neoprene) which keep
them from scratching up the stainless. Unfortunately if you crank the
gas up, the transmitted head turns them into vapor. Manufacturer's
answer was to send more feet, with the same characteristics. So I'm
wondering what kind of machinable nonmarring material could replace
them. I cranked out some samples from some delrin I had handy, but it
melted (not surprising - it was just a prototype). Are there any high
tech plastics that would work (probably talking 400 - 500 degrees)? Or
should I just cut to the chase and make them some polished brass feet?

Google on "high temperature silicone". There are silicones rated to
350C (662F). Brass would surely last longer.

Jim McGill wrote:
Hi all,

Got a question for the collective wisdom. My sister and brother-in-law
recently completed a serious kitchen remodel and got an excellent 5
burner gas cook top. Big stainless bed with 3 part cast iron grid over
the top. And one minor design flaw. The cast iron grids stand on the
stainless and have little rubber feet (smell like neoprene) which keep
them from scratching up the stainless. Unfortunately if you crank the

Unless I'm visualizing this wrong, who cares if parts under the cast iron get
scratched up, they're covered up by what's scratching them. It's a stove, use
it, don't stare at it all day. The scenario that these feet are for shipping
purposes makes the most sense.

From: Crow Leader

It's a stove, use it, don't stare at it all day.
The scenario that these feet are for shipping
purposes makes the most sense.

I agree. I mean if you had some Glyptal or knew somebody with some, you
could put up just enough in a screw on bottle cap to dip each foot and
let dry pointing down, I think that might take the heat, but to
actually make a foot, that's too much trouble for minor scratches in
the stainless. Mom has a similar stainless top with cast iron feet and
there are plenty of scratches from other sources.

Now, Glyptal is motor insulating varnish, and is used to seal in the
smoke vector field inside the stator of an AC motor. (giggle) Overheat
the stator, and the vector field dissipates, rendering the stator
useless. I know they have to bake the stuff on to harden it. At what
temperature does this transition occur?

--Doug