There are a lot of good YouTube videos on how to load the 3M 700, and 3M 714 tape applicators (guns).
If you are having difficulties getting the ATG tape to be on the outside of the roll. Here is a short video to assist you with getting the tape in the correct ordination.
3M ATG 700™ Gun
(This gun is for rolls of tape up
With Scotch® ATG Adhesive
Applicators, a touch of the finger triggers quick, controlled application
of a strip of Scotch® ATG pressure sensitive transfer tape. There's no
mess or clean-up. Bond lines are thin and adhesive flows into surface
List Price $62.00
FS Price $43.95
3M 700 1/4" adapter required to use this gun with 1/4" ATG tape.
List Price $13.98
FS Price $11.19
Please Note: When you purchase 3 M 700 and 714 Applicators No tape comes with the Applicators / Dispensers
For the detail-oriented! Great for framers who need greater control in
detailed applications. Specifically designed for use with 1/4" Scotch
ATG Tapes. Makes applying fillets, laying multi-opening mattes and working
with small wooden frames simple. Other features include a gear system that
helps prevent gum-up, easier loading and a transparent cover - so you know
when it's time to refill!
3M ATG 714 Gun™
List Price $60.27
FS Price $48.15
The Advance Tape Glider
Great for Scrapbooking, Card Making, Invitations, Paper projects... permanent.
w/2 rolls of Acid Free Tape included
Package contains: Advanced Tape Glider Applicator and two rolls of acid free 1/4" x by 36 yards of tape.