you can also unstuck it by hammering with a little bit faster and strength. if the rivet is always has this problem and sometimes it wont work you should use an all purpose oil or wd-40 to prevent it from this problem.
I bought a cheap riveting gun less than $9 Walmart hyper tough and was able to place one rivet in aluminum gutter; the next two rivets got stuck. Bought an Arrow at HD for $32 and out of three rivets all three got stuck and the last two would not even cut or pop the stem although I kept sequencing the handle. Are all rivet guns this bad? I could not pull or push the stuck stem from either gun
Thank you so much. Used oil did not work on this project. Ruin a cheap 38 year old gun. Brought the top arrow one. Wow so easy no taking apart . Thank you I was trying push it the opposite way.
: I heard that the reason for this is because of incorrect stem length. Try trimming a 1/4" from the stem prior to compressing rivit. Let me know how this works.