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Woodworking (rec.woodworking) Discussion forum covering all aspects of working with wood. All levels of expertise are encouraged to particiapte. |
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#1
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I need help finding a variable voltage controller
My vacuum kiln is driving me nuts. after spending way too much time on it I
broke down and bought tthese heating pads http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=4470 the silicone rubber pads I use 4 all together the 700 watt ones and I use two controllers http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=4470 The robotemp controllers on bottom. Well so far I have had two units fail and just kick on the full heat. Well that is pretty hard on the wood. One has been working fine but I sure cant trust it. it ****es me off spending 80.00 and they are unreliable. I just want a simple dial to choose the temp.I don't need a thermostat to keep the temp at a certain level. are the router speed controls what I am after? I have one on hand. -- Knight-Toolworks & Custom Planes Custom made wooden planes at reasonable prices See http://www.knight-toolworks.com For prices and ordering instructions. |
#2
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On Thu, 30 Dec 2004 06:46:11 GMT, Steve Knight
wrote: My vacuum kiln is driving me nuts. after spending way too much time on it I broke down and bought tthese heating pads http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=4470 the silicone rubber pads I use 4 all together the 700 watt ones and I use two controllers http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=4470 The robotemp controllers on bottom. Well so far I have had two units fail and just kick on the full heat. Well that is pretty hard on the wood. One has been working fine but I sure cant trust it. it ****es me off spending 80.00 and they are unreliable. I just want a simple dial to choose the temp.I don't need a thermostat to keep the temp at a certain level. are the router speed controls what I am after? I have one on hand. Steve, Being you don't need actual thermostat action and adjusting the heat level manually works, a router control should work fine. 700 watts is is only about 6 amps and well within specs for most router controls. Using 2 heaters on one control long term might be too much current for some to handle. -- John, in Minnesota |
#3
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On Thu, 30 Dec 2004 06:46:11 GMT, Steve Knight
wrote: My vacuum kiln is driving me nuts. after spending way too much time on it I broke down and bought tthese heating pads http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=4470 the silicone rubber pads I use 4 all together the 700 watt ones and I use two controllers http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=4470 The robotemp controllers on bottom. Well so far I have had two units fail and just kick on the full heat. Well that is pretty hard on the wood. One has been working fine but I sure cant trust it. it ****es me off spending 80.00 and they are unreliable. I just want a simple dial to choose the temp.I don't need a thermostat to keep the temp at a certain level. are the router speed controls what I am after? I have one on hand. should work as long as the heaters are well under the controller's amp limit. |
#4
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Being you don't need actual thermostat action and adjusting the heat level manually works, a router control should work fine. 700 watts is is only about 6 amps and well within specs for most router controls. Using 2 heaters on one control long term might be too much current for some to handle. I just was not sure they were the right thing. I have found what I do need to get though. http://cgi.ebay.com/ws/eBayISAPI.dll...e=STRK:MEWA:IT they go for around 100.00 and they are extremely reliable. a bit more then I need but I don't want 500.00 in ebony ruined. -- Knight-Toolworks & Custom Planes Custom made wooden planes at reasonable prices See http://www.knight-toolworks.com For prices and ordering instructions. |
#5
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On Fri, 31 Dec 2004 17:20:32 GMT, Steve Knight
wrote: Being you don't need actual thermostat action and adjusting the heat level manually works, a router control should work fine. 700 watts is is only about 6 amps and well within specs for most router controls. Using 2 heaters on one control long term might be too much current for some to handle. I just was not sure they were the right thing. I have found what I do need to get though. http://cgi.ebay.com/ws/eBayISAPI.dll...e=STRK:MEWA:IT they go for around 100.00 and they are extremely reliable. a bit more then I need but I don't want 500.00 in ebony ruined. Steve, at the bottem of the info it says rated for 5 amps max. Be carefull of that. -- John, in Minnesota |
#6
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Steve, at the bottem of the info it says rated for 5 amps max. Be carefull of that. oopa your right. 5000va must come out to 5 amps. http://cgi.ebay.com/ws/eBayISAPI.dll...e=STRK:MEWA:IT here are some simple ones. http://store.yahoo.com/webtronics/ensavat1.html I missed this one it's a killer price and 20 amps. -- Knight-Toolworks & Custom Planes Custom made wooden planes at reasonable prices See http://www.knight-toolworks.com For prices and ordering instructions. |
#7
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On Sat, 01 Jan 2005 09:51:00 GMT, Steve Knight
wrote: Steve, at the bottem of the info it says rated for 5 amps max. Be carefull of that. oopa your right. 5000va must come out to 5 amps. http://cgi.ebay.com/ws/eBayISAPI.dll...e=STRK:MEWA:IT here are some simple ones. A little more fine print: The mfg spec is 7 amps max without an external heatsink, 12 amps with. You would still need to supply a pot for control and wire it. IMHO, with an external heatsink, 1 heater. http://store.yahoo.com/webtronics/ensavat1.html I missed this one it's a killer price and 20 amps. If all is as appears this would handle 2 heaters. -- John, in Minnesota |
#8
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I have a fellow offering to help me set this up. an electronic tech and it will
be well worth the planes given (G) -- Knight-Toolworks & Custom Planes Custom made wooden planes at reasonable prices See http://www.knight-toolworks.com For prices and ordering instructions. |
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