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« on: July 19, 2015, 04:41:12 PM »
prabal276
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One step at a time :)

Hey,
i plan to build a hot wire cutter i have a 12v dc adapter. it can also be switched to anything above1v.
can i just connect alligator clips to its ends and then connect it to nicrome wire?Huh?Huh?Huh???
thanks in adv.
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« Last Edit: July 19, 2015, 05:24:56 PM by iamahuman » Logged
 

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« Reply #1 on: July 19, 2015, 04:50:53 PM »
medicineman1987
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Check out section 4 of my thread..  http://www.rcindia.org/self-designed-diy-and-college-projects/glidiator-my-first-trainer-build-log/
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« Reply #2 on: July 19, 2015, 05:35:17 PM »
prabal276
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One step at a time :)
there are no amphs specified on mine . here is the info. slip of the adapter:
1.5 V. to 12 V.
Input 220 V AC.
OUTPUT CURRENT -500MA
MODEL no. HE AD 6602
and the there are two know to control voltage from 1.5v to 12v
and a polarity knob to select between +polarity and - polarity
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« Reply #3 on: July 19, 2015, 05:40:04 PM »
prabal276
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One step at a time :)
i think ma is something related to amphs
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« Reply #4 on: July 19, 2015, 06:30:40 PM »
medicineman1987
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500mA is 0.5A.
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« Reply #5 on: July 19, 2015, 07:28:21 PM »
prabal276
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One step at a time :)
would it work??
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« Reply #6 on: July 19, 2015, 07:36:18 PM »
rcrcnitesh
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I don't think so. The wires length should be decreased or the width should be increased for it to work.
What charger do you have.
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« Reply #7 on: July 19, 2015, 08:43:26 PM »
medicineman1987
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500mA is too little. Go get yourself a nice big transformer like I did. You can pull them out of old electronics. Go to some scrap electronics place and get it cheap.
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« Reply #8 on: July 19, 2015, 08:44:42 PM »
medicineman1987
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Just use all the stuff I used.  Its tried and tested.  Multiple people have used my cutter since.
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« Reply #9 on: July 19, 2015, 09:03:27 PM »
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I think you have the good old switchable power-supply from the 90's Grin

mA is definitely the Current rating, ie., milli Amp(s) or Ampere(s) (not Amphs)

I am not very sure, if half Amp is sufficient to achieve the required heat to make a hot-wire cutter. Try a higher current rated p/s.
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« Reply #10 on: July 19, 2015, 09:05:57 PM »
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One step at a time :)
is there any transformer available online?Huh??
will this work i ll add a electric extension from the ac plug to the plug of the adapter and add a regulator in between.
would this work???
http://www.ebay.in/itm/291414319227?aff_source=Sok-Goog
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« Reply #11 on: July 19, 2015, 10:56:33 PM »
rcrcnitesh
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Re:
What charger do you have? If it's an b6 you can flash it with an open source firmware and use the hot wire functionality.
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« Reply #12 on: July 20, 2015, 06:58:13 AM »
prabal276
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One step at a time :)
I have a b3ac
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« Reply #13 on: July 20, 2015, 07:01:01 AM »
prabal276
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One step at a time :)
Wouldnt dc 12 volt and 2 amph work??
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« Reply #14 on: July 20, 2015, 08:22:44 AM »
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DIYer
Prabal you can also use a lead acid battery 12v, the one that goes in a ups or a bike. Ample of amperes for the job. If you have a b6 type charger, it can easily charge your battery

PS: most advertised 12v 2A like that used by WiFi routers would stall and not provide enough juice for the work.
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« Reply #15 on: July 20, 2015, 01:03:45 PM »
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@prabal276,
You may find this of interest:
http://www.rcindia.org/self-designed-diy-and-college-projects/5th-sweepstakes-entry-diy-lipo-powered-hot-wire-cutter-k-k-iyer/
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« Reply #16 on: July 20, 2015, 02:24:18 PM »
prabal276
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One step at a time :)
Cant you guys gimme a link to an adapter or a battery?
my studies dont gimme enough time to got out searching. I can olny manage ordering online.
what is an stall that you were talking about in the above post?
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« Reply #17 on: July 20, 2015, 04:24:48 PM »
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Re:
Instead of posting here just search.
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« Reply #18 on: July 20, 2015, 05:42:29 PM »
prabal276
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One step at a time :)
http://www.ebay.in/itm/281733341999?aff_source=Sok-Goog

http://www.ebay.in/itm/271913447307?aff_source=Sok-Goog

http://www.ebay.in/itm/151721839040?aff_source=Sok-Goog
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« Reply #19 on: July 20, 2015, 06:07:26 PM »
prabal276
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One step at a time :)
http://www.ebay.in/itm/DC-12V-2A-24W-Switch-Power-Supply-Driver-Transformer-SMPS-Adapter-/271913097545?pt=LH_DefaultDomain_203&hash=item3f4f489949
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« Reply #20 on: July 20, 2015, 06:08:24 PM »
prabal276
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One step at a time :)
http://www.ebay.in/itm/DC-12V-2A-24W-Switch-Power-Supply-Driver-Transformer-for-CCTV-LED-Strip-Light-/111031395184?pt=LH_DefaultDomain_203&hash=item19d9fca370
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« Reply #21 on: July 20, 2015, 07:17:27 PM »
rastsaurabh
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this will not work as it has a short circuit protection / overload protection.

You will have to disable the protection to short via Nichrome wire.
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« Reply #22 on: July 20, 2015, 08:04:52 PM »
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One step at a time :)
So cant i disabe it somehow or order one of the adapters mentioned above
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« Reply #23 on: July 20, 2015, 09:47:20 PM »
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Re:
Get a 12v 5a adapter. It will be useful when you upgrade your charger.
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« Reply #24 on: July 20, 2015, 10:11:28 PM »
prabal276
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One step at a time :)
http://www.ebay.in/itm/Universal-12V-5Amp-60W-AC-DC-Power-Supply-Adapter-Charger-for-PC-LCD-Monitor-TV-/331552447941?pt=LH_DefaultDomain_203&hash=item4d3210ddc5

http://www.ebay.in/itm/Power-Adaptor-12-Volt-1-5Amp-Charger-AC-INPUT-100-240V-DC-OUTPUT-12V-/141720123405?pt=LH_DefaultDomain_203&hash=item20ff2d780d

http://www.ebay.in/itm/12V-5Amp-DC-Power-Supply-Adapter-for-LiPo-Chargers-High-Quality-Imported-/201128525989?pt=LH_DefaultDomain_203&hash=item2ed431c0a5
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« Reply #25 on: July 21, 2015, 12:52:11 AM »
medicineman1987
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Look bhai, the only reason i'm telling you to use a transformer is so that you can control the heat easily with a fan regulator like i did. Its available at any electronics shop.  Moreover you live in Delhi.  You will be able to find all the parts easily at your local electronics shop.
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« Reply #26 on: July 21, 2015, 06:34:51 AM »
prabal276
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One step at a time :)
Ok,
ill go today eve. I need 12v. 5amp right??
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« Reply #27 on: July 21, 2015, 02:25:53 PM »
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One step at a time :)
Hayyy??
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« Reply #28 on: July 21, 2015, 05:13:39 PM »
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Retreat, Hell!
12V 5A will do the job. But, please be cautious while handling it if you haven't worked with these things before.
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« Reply #29 on: August 29, 2015, 07:10:09 AM »
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I used an old car battery charger, It was rated at 5 amps but I was lucky to get 2 amps out of it. I had no problems cutting thick foam with it and I also used it for my rust removal setup.
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RC India  RC Equipments  Tools, Materials and Building Techniques  Topic: Help with DIY hot wire cutter
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