 Re: Question about Heat Pressing on Sleeves
There are teflon pillows made to slide into sleeves and then lay on the press.
Alternatively, you could buy a large thermal pad and cut it to your dimensions then back it with cardboard or a thin laser cut steel for rigidity and then slide that into your sleeves and onto the press.
One of the keys to either of these steps is having a press that can accomodate thicker items and adjust the pressure accordingly. | 
