Recent content by jackrod

Been experimenting a bit with temperature control for my logs. I found a few sensors which are interesting. Currently I am using https://www.amazon.com/dp/B0BGXXGR1M. Nice K-type thermocouple in a SS sheath, 3x40mm, and could be pretty cheap in multiples. I put it inside the heater cover...

There's a lot of things that have to be balanced well to make a good vape. If you really just wanted to get the most effect possible from the raw material, you would probably want to just bake it in a sealed container and eat it. Or extract it and put it in a cartridge. But most of us would be...

Not really, I haven't done too much experimenting on that. My designs are all most similar to the Heat Island and DIY logs in this thread, as well as most other log vapes. @Alan and @blokenoname have written lots of good information on here, but I think the important characteristics are the low...

I'm with you on all that. I'm pretty sure that when people say they can "taste the metal", its the burnt off fingerprints, or whatever the degradation products from metal contact with skin oil, that are the real cause. At least in a convection device. I could maybe buy that there is some slight...

Nice! Sounds like a cool build. What kind of clips for the bulb leads/wires? I looked around for crimp contacts but ended up being satisfied with using tiny SS tubes (2mm OD, 0.15mm wall) to hold the bulb. They support the bulb well and can run without insulation, low thermal conductivity so...

Sounds cool to me. Glazed on the inside would be ideal I guess, to avoid any cleaning/dust coming off issues, but I wouldn't worry too much about it. 1in ID is what I used on my wood units with 11mm heater cover (~7mm gap), they get pretty warm on the outside but easily holdable. It's a bit...

@Flotsam: I think you may be right, and the Volcano, EQ, etc with the bags/fan follow that principle, though don't seem to be too popular now. Does anyone know whether there ever any fan powered portables? That could be an interesing approach, too. But I think most people, myself included...

Been thinking about logs and halogen bulbs some more, and looking back at my heat transfer textbook, trying to understand what is happening in logs/other vapes. I think I found some interesting ideas/observations. Anyone try using some high-power (AC) bulbs way below their rated voltage? This...

You can easily dial in the power using a variable voltage power supply. That can be a lab supply or adjustable DC-DC converter. Lab supply is nice since it allows constant current operation too, and will display voltage/current applied. Some show the power too. Like this one...

Thanks brainy! It passed its first test well :D and stood up to a very hot burn in at around 12.3V overnight. No visible oxide discoloration on the bulb tubes, pins, or contacts. While the heater cover and screens got that slight yellow tint. So it seems that system isn't getting too hot, like...

Latest update, on this idea of an easily serviceable/long lasting halogen log. This one has a nice machined socket for the 10W halogen bulb, and is held together by just the 2 heater cover screws. Same 11mm/10mm heat island style cover, and square walnut body. I am pretty happy with the design...

Shouldn't be afraid of a little torch action when soldering :science: I use it to get the solder off of the barrel jacks for reuse, or preheat big stuff. All about getting the heat where it needs to be. @Flotsam Good luck with the build. This project has really showed me how simple a vaporizer...

It's a good point about the distance from the heater. My cartridges were quite short. But the SS tubing extension trick could work for them too. To that point, it might be better to just crimp on some thin tubing to form an extension, and run those down to a socket in the base. The socket could...

Good idea on the dremel. I did manage to file off the deformed part of the tube, and push it onto the pins of one of my bulbs. Then pinched it on with pliers, to connect it permanently. Did the same with copper wires on the other side of the tubes. Used this as a replacement for the wire-wrapped...

Well, the tubing I used was too small, some of the pins on the bulbs are a bit too large to fit the 0.7mm ID. About half do fit, though. Seems like the nickel plating varies a bit in thickness. This size, very close to the pin size, is not really suitable for making a socket. Though I did manage...