Was going to wait to respond to this in hopes of a reply. I too was surprised at the difficulty I had locating a guide.
Closest thing I found was a thread on DMT Nexus which linked to "the guide" on the Shroomery. Unfortunately, the original post of the Shroomery thread is deleted.
I managed to locate a guide on Reddit, although it seems to differ from what I've read elsewhere in that it uses 100% PG (no VG, no CBC). Below you'll find the Reddit post:
Quote:I post one of these ever so often, usually when I notice the carts getting popular and people asking how to make them.
They are very easy to make, however they get a bad name due to many people having no clue what they're doing or they use a bad vape set up.
This is for a 1 gram cartridge, you can scale it as needed
For starters, you're going to need .5g of yellow or white DMT. The less clean your DMT the less likely you'll get through the full life of a cartridge. The dark and orange DMT will burn these things out, I dont think they're designed to handle all of the additional plant fats.
For your juice you want to use mostly PG if not 100% PG (propolyne glycol). DMT recrystallizes in VG (vegetable glycerin) and it can cause your cartridge problems. I personally just stick with 100% PG and never have issues. The only downside is PG is harsh on the lungs if you're not used to it (I'm a nicotine vaper so I never had problems). So you might want to just practice inhaling regular PG first before you RIP the Deems and end up blowing the entire hit out from coughing.
You want to mix .5mL of PG with your .5g of DMT. Do yourself a favor and buy a glass syringe that measures tenths of a mL so you can be precise with this. I put both the DMT and PG into a shot glass, cover that with aluminum foil, and then swirl it around under hot water. It will take about 3 to 5 minutes to completely dissolve. The resulting juice will fill up a 1 gram (1mL) cartridge. You can scale this, so if you only have a .5 gram cart use .25 DMT and .25 mL of PG. The golden standard is a 1:1 ratio, however I assume you can put more DMT in and it should still dissolve in PG, have never tried though.
Now what is probably the most important part is the hardware you use to vape it. Many vaping setups simply dont work with this juice. I dont know why, I've tried many different brands but once I found what works I never switched. I use the Ccell Palm battery and with their Ccell TH2 cartridges. This setup has never failed me. I have tried the TH2 carts on different batteries and it doesn't work, have tried the cell battery with different carts and it didn't work. I know there are other setups out there that must get the job done, but for 30 bucks for a battery and cartridge it's hard to beat the value of the Ccell.
Just make sure whatever hardware you're using isnt just some cheap crap. Plastic cartridges won't work, the cheapo ones at the vape store wont work. Chances are if you made the juice properly and it's not working correctly it is usually the fault of the device.
I'm no expert but I see no red flags in this post and the responses tend to be positive (outside of the fact that he insists on using a Ccell palm battery...bit skeptical of that recommendation as I had one a while ago and it barely got hot enough for my cannabis carts. I would imagine that my Uni Pro 2.0 which is 3.7v and 2.4wh is a much better choice. FWIW I have heard the ccell carts are great.)
Would love to see long timers and experts chime in. I saw an interesting thread about CBC being superior to PG and VG.
Sorry I couldn't be of more help.