How do you load a Bostitch heavy duty stapler?- loading staples into a stanley staple gun heavy duty stapler sizes ,19/5/2020· How do you load a Bostitch heavy duty stapler? Place a sleeve of heavy duty staples into the carrying tray, prongs facing downward. On most Bostitch models, a visual aid will be printed on or near the tray to help with loading. Replace the follow block in its cradle and depress the top of it until the spring begins to compress.Best Heavy Duty Staple Guns Reviews - GoStapling12/3/2020· It is an electric staple gun that is compatible with heavy duty as well as light-duty D-staples, U-staples, and Brad nails. The kit comes with 4000 staples that come in four different sizes. Also, it comes with a lever that helps you adjust the power to either high or low and another lever that makes it easy for you to select the type of staple that you are using.