Thanks, Alex! Will do.
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| Anyone use 1200 watt blankets for side bending? http://luthiersforum.com/forum/viewtopic.php?f=10101&t=43134 |
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| Author: | Nick Royle [ Thu Apr 03, 2014 8:49 pm ] |
| Post subject: | Anyone use 1200 watt blankets for side bending? |
I just wonder if I should go with 800 rather than 1200 for any reason? And what kind of off-the-shelf unit could I use for controlling temperature? I'm struggling to find something. Thanks in advance for any advice, Nick |
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| Author: | Alex Kleon [ Thu Apr 03, 2014 9:00 pm ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
Nick, you might want to PM Fred Tellier about controllers. He's helped quite a few people, and he is a really good guy! Alex |
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| Author: | Nick Royle [ Thu Apr 03, 2014 9:04 pm ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
Thanks, Alex! Will do.
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| Author: | Nick Royle [ Fri Apr 04, 2014 3:41 pm ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
I think I'm going to order it tonight. 1200 watt must be ok or there wouldn't be demand? Guess it'll just speed up the process. |
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| Author: | LarryH [ Fri Apr 04, 2014 4:00 pm ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
My blanket, from Omega, was rated at 10 watts and I could have gotten a 5 watt model so I'm a bit confused about 800 - 1200 watt heating blankets. I just looked again at the Omega specs ad noticed it's 5 or 10 watts per sq inch so not sure how that relates. I got the 10 watt PSI and it very hot very very fast - will smoke itself pretty quickly if not watched carefully.. |
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| Author: | LarryH [ Fri Apr 04, 2014 4:03 pm ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
Easiest off the shelf temp controller is a router speed controller from Harbor Freight. http://www.harborfreight.com/router-spe ... 43060.html |
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| Author: | Nick Royle [ Fri Apr 04, 2014 4:09 pm ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
These are they... http://www.ebay.co.uk/itm/Keenovo-Silicone-Heater-Heating-Blanket-Guitar-Side-Bender-6-X-36-800W-220V-/271396127432?pt=UK_MusicalInstr_Access_RL&hash=item3f307842c8 http://www.ebay.co.uk/itm/Keenovo-Silicone-Heater-Heating-Blanket-Guitar-Side-Bender-15-95cm-1200W-220V-/281264981600?pt=UK_MusicalInstr_Access_RL&hash=item417cb30660 36 inch by 6 inch = area of 220ish, divide the 1200 by that and it seems like the 1200 watt is 5 per square inch... Or is that 10? Electronics is not something I tend to touch to often. Would you say the 10 is overkill? Or just advising to be careful with it? I may have to get one of those harbor freight ones. Can't find them over here. Maybe I'm not looking right. Thanks for the help, Larry! |
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| Author: | LarryH [ Fri Apr 04, 2014 4:27 pm ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
I really like the blanket i have and couldn't imagine having only half the power. It's a bit like horsepower, can't really have too much but you have to be more careful. So to answer your question more directly, no I don't think the 10 is overkill. |
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| Author: | Nick Royle [ Fri Apr 04, 2014 4:35 pm ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
Awesome. Cheers, Larry! Now to work out if I got that maths right. I hope the 1200 is 10w psi! EDIT: No, it looks like it's definitely is 5w psi. So thank goodness I risked overposting and asked! The hunt continues.... |
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| Author: | Nick Royle [ Fri Apr 04, 2014 5:36 pm ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
Larry, I just checked on Omega, and they don't list a 10w psi 6 x 36" blanket... What size did you get? http://i.ebayimg.com/t/Keenovo-Silicone-Heater-Blanket-6-X37-4-1-2KW-220V-w-Rainbow-Thermostat-0-200-C-/00/s/MTA1NlgxNTg0/z/tLAAAOxy4fVTFHYp/$_58.JPG I can get that with it for 12 quid extra. Should be as good as the router controller but only goes up to 200 degrees C (392 fareingheit). |
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| Author: | LarryH [ Fri Apr 04, 2014 6:32 pm ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
That site is very hard to navigate for me. It's been a very long time and can't recall what I ordered or what I got. Sorry I can't be of any more help. |
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| Author: | Nick Royle [ Fri Apr 04, 2014 7:23 pm ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
No worries at all, Larry, thanks for all your help! I'll hold off on ordering a little longer! Cheers, Nick Anyone else using a 5 watt per square inch one happily? |
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| Author: | Clay S. [ Sat Apr 05, 2014 6:18 am ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
If IIRC the blanket I use is 2.5 W /sq.in. and it works fine. I think many people use the 5 watt blankets. In the U.S. household voltage is 110v, so a 10w blanket could potentially draw over 18 amps - exceeding the recommended limit for many branch circuits. In England with 220v circuits the amperage may not be a concern (what gage wire is used for branch circuits there?). The 5w blanket might be easier to find a controller for also. |
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| Author: | Fred Tellier [ Sat Apr 05, 2014 8:51 am ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
Quote: Easiest off the shelf temp controller is a router speed controller That is not a temperature controller, it will control the amount of power to the blanket but does not control the temperature, you must do that by monitoring the temperature. A temperature controller uses a thermocouple to monitor and adjust automatically to the temperature you have set then will hold it within a couple degrees of the set temperature. I also added a timer to my controller box as sometimes a person can get distracted and might forget the controller is still heating the wood, 15 minutes is plenty long enough to bend and set a side. Fred |
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| Author: | Nick Royle [ Sat Apr 05, 2014 10:43 am ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
Clay S. wrote: If IIRC the blanket I use is 2.5 W /sq.in. and it works fine. I think many people use the 5 watt blankets. In the U.S. household voltage is 110v, so a 10w blanket could potentially draw over 18 amps - exceeding the recommended limit for many branch circuits. In England with 220v circuits the amperage may not be a concern (what gage wire is used for branch circuits there?). The 5w blanket might be easier to find a controller for also. Cool, thanks, Clay! That makes m'mind up! I don't know what gauge wire we use. If i need something wired, I call a mate! 
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| Author: | Nick Royle [ Sat Apr 05, 2014 10:43 am ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
Fred Tellier wrote: Quote: Easiest off the shelf temp controller is a router speed controller That is not a temperature controller, it will control the amount of power to the blanket but does not control the temperature, you must do that by monitoring the temperature. A temperature controller uses a thermocouple to monitor and adjust automatically to the temperature you have set then will hold it within a couple degrees of the set temperature. I also added a timer to my controller box as sometimes a person can get distracted and might forget the controller is still heating the wood, 15 minutes is plenty long enough to bend and set a side. Fred Thanks Fred, Does this rainbow controller fit the bill? http://i.ebayimg.com/t/Keenovo-Silicone-Heater-Blanket-6-X37-4-1-2KW-220V-w-Rainbow-Thermostat-0-200-C-/00/s/MTA1NlgxNTg0/z/tLAAAOxy4fVTFHYp/$_58.JPG |
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| Author: | Joe Beaver [ Tue Apr 08, 2014 6:06 pm ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
It does look like the Rainbow has a thermo coupler. I assume the dial is used to set heat in Celsius. If those are true it should work as a controller... how good of a controller? That would be the question. The kind I am use to shows the actual temp and the set temp in a digital display. That does give you a better feeling for what is going on. |
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| Author: | Nick Royle [ Tue Apr 08, 2014 6:37 pm ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
Thanks for the input, Joe! That's kinda what I figured. I bought it anyway. For £12 it's worth a shot! Was dispatched yesterday. Cheers! |
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| Author: | ntredwell [ Wed Apr 09, 2014 2:44 am ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
Definitely interested in how you get on with this blanket, as I have been considering one myself |
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| Author: | Shane Woonton [ Wed Apr 09, 2014 3:59 am ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
Nick Royle wrote: Thanks for the input, Joe! That's kinda what I figured. I bought it anyway. For £12 it's worth a shot! Was dispatched yesterday. Cheers! And Nick please let us know how that controller goes. I've been looking for something in 220v that doesn't cost an arm and a leg. Cheers, Shane |
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| Author: | Nick Royle [ Wed Apr 09, 2014 7:41 pm ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
Will do, Shane, no worries! |
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| Author: | weslewis [ Wed Apr 09, 2014 8:44 pm ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
building a blanket controller is easy, look up some of Freds posts...mine consists of a pid controller, ebay for about 35 bucks , 20 amp solid state relay, thermocouple wire , cheap timer and a regular 110 outlet.. |
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| Author: | Nick Royle [ Wed Apr 09, 2014 8:51 pm ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
Very neat. Lucky you didn't post before I bought it or my brother would've given me an even harder time for not making it myself! Mine was only £12 though!? If it works well, it will have saved some dough. (Thinking about it, I probably didn't do enough searching about the controller, just asked. My bad.) |
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| Author: | Nick Royle [ Mon Apr 28, 2014 5:51 pm ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
Hi All, I got back from holiday a couple of days ago and the blanket arrived today. It's porbably a couple of weeks before i can test it but here are some pics for now... £72 on eBay direct from Keenovo - free delivery took just less than 3 weeks. I still need to put a plug on it. The controller seems good to me, if it works well. The thermometer connection is a bare silver wire, I don't know if that's usual or what? The controller worked out to £12, so I don't mind if I have to buy another one. I thought it was worth the gamble. As soon as I've made my bender and mould, I'm going to give it a full test and I'll report my findings. Would love to hear any thoughts from those who were waiting to see what I thought of it. |
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| Author: | PeterF [ Mon Apr 28, 2014 6:22 pm ] |
| Post subject: | Re: Anyone use 1200 watt blankets for side bending? |
I'd be interested to see if this works too. Just been thinking about upgrading to a bending machine myself. Where did you find that controller though? The only one from keenovo I can find on ebay is this one for £60... http://www.ebay.co.uk/itm/Digital-PID-C ... 417fc23b91 |
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