Greg, sorry for that suggestion but my fault can be quickly repaired and in the correct language.
See the attachment, which is part of a chapter on fig grafting techniques written by one of 'fig founding fathers', Dr. Ira J, Condit in his Circular Letter nr 77 of the California Agricultural Extension Service on October 1933. It is well explained and simply documented.
The fellow on the video clip ,in his language, was more or less telling exactly that.
On those remote years there were no 'plastic bags' so they had to go with the wax or in this example an asphaltic emulsion, we call it here 'Norwegian tar'.
If you like you may use the para films, bands, plastics, etc.. but my grand dad used a home made wax made of a brick of bee wax plus some other stuff and when grafting ha had to keep it warm for best results. That emulsion is also very effective and may not even need anything else once it cools down and solidifies. the tops of the scions are cut and waxed as well
Dennis, I think that if done properly and in the right season approx 3 to 4 weeks after the graft is done you mat take the 'plastic' away, but best is..no hurry, give it at least a month just in case.
Suzi, Condit explains it in a very simple manner, and on this particular method you may not use any film, plastic, rubber band ...at all. The cleft shall be exerting rather strong pressure on the scions, warranting firm and permanent contact between cambiums of 'stock and scion' that no additional clipping is necessary...effective sealing with wax or emulsion is mandatory.
Do not give up, many people prefer the spring grafting 'chip' , 'patch', etc.. and these are also simple and can be done up to August, ideally May.
When reading the circular copies start reading on page 36.
Happy graftings
Francisco