Hello from Fresno

Most lined drums are lined with a Resin Based Product , either LLDPE or LDPE and ignition factor can range from 400 - 600 degrees. Most resins are safe , But are Toxic when burning. I would clean as well as possible and then burn it out 3 or 4 times to be safe. And by the way Welcome to the Family and good luck with your UDS

Welcome to SMF - good luck with  the drum

Good to have you on board!  I don't have an UDS but have read some posts on here from people who are doing a build.  The suggestions that I have read have been to find someone local who does sandblasting.  Sounds like it does a great job of taking the liner off and saves a lot of time.  Have heard that it costs $20 -$30 to have done, sounds like it is well worth the price.

First off Welcome Ronald to SMF. you'll like it here for there are alot of really good folks here that would just love to help you with just about anything to do with smoking. Now there are alot of proven recipes for some amazing things here too. So if you need sign up for the E-Course it's free and it will give you the basics of smoking and some good methods to use also. So the next big thing for you to do is go out and get you something to smoke and if you happen to have any questions just post it here and we will be happy to answer them for you.

Welcome To Your New Addiction