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FWIW, there's no plastic in any of these (apart from the lid of the Grande, but that's protected w/a heat shield). The Hammond cases are all aluminum - typically CNC machined aluminum. The internal support pieces you see in some units are made from garolite , a non-conductive...

Hi, Thanks for the notes, which I assume are in reference to the 2x 18650/1590B unit I'm at work on? I did consider orientation when I was drawing it up, and this was the orientation I preferred - it seemed too tall and a bit unstable when used on end. That was my decision, and you may feel...

Hi all, I appreciate your enthusiasm - this is what's happening: 2x 18650 Mini IH: This is a summary of current info. Upthread, I've shared pics of a 2x 18650 heater design I am currently working on. The PCB for that heater is still in development, as it isn't working yet. I have made some...

Hi @Squiby , When these are ready, I expect them to be priced in the $115 - $140 range. I will have more information about the price, their longevity, what's going to be included or not included, etc., once I have a working prototype. Until then, however, I really DON'T know, as they aren't...

Thanks for linking to that! I had not seen those particular boards before. Those are very interesting, although I don't think they'll work for my/our needs. The challenge of adapting PWM control to portable induction heating is that any temp control that heats more slowly also uses more power...

Hi, I wanted to share a few product updates: Fluxer Grande (aka, "the IH in a cup"): I've started making my first batch of these. The build time will probably be about two weeks, as I have a day job (unrelated to making induction heaters), and I'm also still waiting on a few components to...

Hi all, Thanks again for your comments! I have a few small updates I wanted to share. The Hammond 1590B portable (the 2x 18650 device a few posts above this one): Thanks for the positive comments! As I mentioned last week, this model is waiting on a working, stable circuit board. The good news...

Thanks so much for the feedback, @Monsoon , @felon167inc , @Gray Area , and @oddjobold - I definitely appreciate it!! Message received - I'll move forward with the smaller one with all due speed, and put aside the mug for now*. I'll be using the Alpinetech 1590B. It's the size of a Hammond...

Thanks, @Nina ! I’ll try for both.

OK, here's a pic, minus heat shielding and two sub-PCBs. The finished version will have a hole in the cover, and the cover will attach magnetically. Remember: This one isn't ready to go yet, so be patient. Not sure of the cost yet, but less than the mug based one, as it's a much, much simpler...

Hi, Thanks for the replies. I do, but it's still not ready for prime time. I'll share a pic, though. This one has 3x 18650s. I have an alternate design for the same mug that will run 4x 18650 (2s2p), but it's a more time consuming, tighter build. I had heard they would be coming out...

It's been a bit since I updated this thread, so I want to post a brief update on my shop and plans for heaters. PWM Controlled Induction Heaters After thinking things over, I am rebranding my PWM-controlled heaters as "experimental," since they are, in essence, experimental devices. I am...

I have gotten them quite small, actually. Not quite as small as above, but small enough that I expect to be offering some nifty portables soon, as I outlined above. This is one prototype I made: The paper is the same footprint as the circuit board.

Cool - thanks, @stardustsailor. I will read through the links you shared. Those look like fairly straightforward circuits. Thanks! FWIW, I started this PWM+ IH project because I was intrigued by possibilities offered by the Arduino PWM MOSFET trigger these circuits depend on. My brain basically...

I appreciate the interest in the portables. At the moment, though, the smaller one is still very much in development. As soon as the circuit proves out, I'll be able to do some real world testing. It's portable, and we all want it to be tough enough to haul around - "longevity and reliability"...

I have two portable designs in the works. One design is basically ready now, (pic from my web site), but I need to build a batch to see if the design scales OK for production. I took this proof-of-concept/prototype camping for a week and it worked like a champ. It's a tight build, though, and it...

Thanks, @stardustsailor. You have given me a lot to read and a lot to think about. Thank you! I am obviously not coming at this with an EE background. I did not encounter any of the material you shared in my research, most likely because I was a) not using the right search terms, and b) hadn't...

Hi all! With all due respect to @Pipes and his line of Dynavap induction heaters, I am going to make and sell a few induction heaters of my own design. I'll start with my big news: I'm making and selling a Dynavap induction heater with pulse width modulated (PWM) temperature control! What is...

Hi, thanks for linking to this here. I am the OP of this post on Reddit and the linked Imgur album of the built unit, and that's my build. It works great and I am very happy with it. As I said in my notes in that post, I am definitely aware the hard work and trial and error you guys and gals in...

This is just a general "thank you" to @Pipes and the other FC users who contributed to this design! I built this very analog, bare-bones version of this IH last night, and have been blown away by how easy it is to use and how well it works! I have mine powered by a 12V marine battery at the...