No, unlike an everyday mastic joint sealant or 'caulking' gun, which tends to deal with mainly lower viscosity materials and sometimes carries a thrust adjusting switch, the 3C Wood Repair Resin Gun has been thoughtfully designed to have a strong enough thrust as standard to enable the user to extrude higher viscosity materials such as epoxy resins with relative ease when applying normal pressure to the trigger. This extra power is necessary for stiffer materials like resins to push the gun's rod plungers firmly into the reinforced plastic plungers in the cartridges.

The loading of the 3C Wood Repair Resin Gun is as simple as pushing and holding down the silver thumb trigger release button at the back of the handle/trigger, whilst pulling the purpose-built black plunger rod handle at the very back of the gun fully backward (with very slight force) and popping the cartridges one by one into the cage (again, with slight force) then, again, whilst holding down the silver thumb trigger release button at the back of the handle/trigger, simply palm the black plunger rod handle at the very back of the gun fully forwards until the rod plunger heads hit the cartridge plunger discs. To release, just reverse the procedure.