For this simple forge you will need several usual items:
A hair dryer (In the final version I used 2000W hair dryer FS-09 with the cold air switch)
An iron pipe (non galvanized) I used about 1 m long and about 1.5 cm wide pipe
A piece of hose (wide enough to fit the pipe, at least approximately) I used about a 50 cm long hose. It helps you -manipulate the forge because it is flexible, but probably you could connect the hairdryer directly to the pipe.
A duck tape (Optional)
A plastic bottle (I used 0.5 and 1.5 plastic bottles)
Step 1: Cutting the pipe
Cut the pipe as on the photos.It would probably be easier with the proper tool.