I have to add my two cents worth to gluing with Elmer's Glue.....
I purchased this mini iron from Amazon (no affiliation just a very satisfied customer)
SteamFast SF-717 Home-and-Away Mini Steam Iron
Sold by Amazon.com LLC
This is a very tiny iron and so great for pressing after using the glue - I have NOT used the steam feature so cannot comment on that feature but use it exclusively when piecing. For the $19.95 price it is one of my better investments!!