Design & Build a 12V Heating Pad - Advice Needed

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Discussion Overview

The discussion revolves around the design and construction of a 12-volt electric heating pad, focusing on temperature specifications, safety concerns, and regulatory considerations. Participants share their thoughts on the feasibility of the project, potential risks, and necessary knowledge for successful implementation.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant expresses a desire to create a heating pad that reaches temperatures of 150-200 degrees Fahrenheit in 3-4 minutes, indicating this is a preliminary thought.
  • Another participant warns that such temperatures could be dangerous for skin contact and emphasizes the risks of working with electricity without formal training.
  • A participant mentions that heating something quickly is feasible unless it is large or involves boiling liquids, suggesting that commercial heating solutions exist but require safety measures.
  • There is a suggestion to consider thermal protection devices to prevent fire hazards and to ensure safety for users.
  • One participant contemplates lowering the temperature and increasing insulation for their heating pad design, indicating a shift in approach.
  • A participant advises learning about flexible resistive heating elements, insulating materials, and safety regulations, recommending that the original poster examine existing products for insights.
  • Another participant humorously suggests purchasing an existing heating pad as an alternative to building one from scratch.

Areas of Agreement / Disagreement

Participants express varying levels of concern regarding safety and feasibility, with no consensus on the design approach or temperature specifications. Multiple competing views on the project's viability and safety remain evident throughout the discussion.

Contextual Notes

Participants highlight the importance of understanding regulatory requirements and safety standards, but specific assumptions about temperature safety and material properties are not fully explored or resolved.

ljstew
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Hello
I am not an engineer or an electrician. I would like some advice on designing and building a 12 volt electric heating pad.
I am thinking I would like it to warm to 150-200 degree in 3-4 minutes, that is just a thought.
Thanks
 
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ljstew said:
I am not an engineer or an electrician.

These are two good reasons not to proceed further with this project.
 
ljstew said:
Hello

I am thinking I would like it to warm to 150-200 degree in 3-4 minutes, that is just a thought.
Thanks

that is reason 3 think about what that temp would do to someones skin. Not including the fact that you shouldn't play with electricity without formal training.

edit:just realized your probably talking Fahrenheit, not Celsius lol
 
Last edited:
Mordred said:
that is reason 3 think about what that temp would do to someones skin. Not including the fact that you shouldn't play with electricity without formal training.

edit:just realized your probably talking Fahrenheit, not Celsius lol

200F would still be dangerous for skin contact - even if there were no actual roast pork smell.
 
Heating something quickly is not difficult - unless. Unless it is large and takes a lot of heat, or is boiling off a liquid. Companies like Minco make off-the shelf heaters for these applications, but if your playing with these temperatures, you need thermal protection devices to prevent fire, and guard structures to keep people from being hurt.

No one will sell such a product without UL approving it first.

This may not seem like much until the judge declares that all your liquid assets and 30% of your future income is awarded to someone you hurt.
 
Thanks Mike. Those temps. may be more than I need. Actually I'm thinking I can lower the actual temp. and use more insulation. My pad will only be about 16"x 24"
 
I plan to form a L.L.C. if I put this in prouction. I have came up with an idea and am wanting to build a proto
 
You need to learn about flexible resistive heating elements/wire, insulating materials, power systems design, industrial design (make it attractive and durable) and lastly about the regulatory agencies concerned with safety in the country you want to sell it.

I'd start by taking apart the products most similar to what you want to produce, and looking at all the regulatory icons on the package.

Your best bet is to contract with an experienced manufacturer of heating pads.
 
Great idea I will go to a thrift shop and buy an electric blank or heating pad.
Thanks Big Guy
 

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