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High temp plastic feet
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 |
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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 |
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