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the artwork flat. Pushing down will tend to force the canvas out of the grasp of the
clamping bar; this would be equivalent to increasing the stretching pressure past 50 psi.
Under normal operating conditions the Stretching Bar will rise a little above the top of
the Clamping Bar as the stretching pressure is increased. The closer the stretching
pressure is to the set point of the clamping bar the more likely it is to rise.
This is not an issue unless the bar remains in this position or there is excessive play. If
this occurs contact us.
Clamping Bar is lifting during stretch
Under normal operating conditions the Clamping Bar will tend to rise a little above the
top of the angle bar as the stretching pressure is increased. When the canvas is clamped
and being stretched there is a strong upward force that tends to pull the clamping bar
upward with the canvas. This is not an issue unless the bar remains in this position or
there is excessive play. If this occurs contact us.
Stretching Bar deflecting, or deflecting unevenly
This is also a normal response during a stretch. This Stretching Bar was purposely
chosen because of the amount of deflection it has, this conforms well to the rubber
extrusion. As for the uneven bar, this is more a matter of placement of the artwork. Try
position the artwork at the center of the machine and work from there, favoring one side
will result in an uneven travel but should not affect the quality of the stretch.
Canvas is not tight
How tight is tight? There have been many arguments regarding what is considered a
tight stretch. Canvas is very dynamic and is susceptible to atmospheric conditions, what
once was tight will soon be loose. Over-stretching a canvas will give the canvas memory
