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Instruction Manual 

GS-60 

Support Page

http://www.youtube.com/user/dweaverframe?feature=mhee

 

 

Introduction 

 

The Canvas Stretching Machine is a fully pneumatic canvas stretcher capable of 
stretching original art on canvas, giclee prints and any fabric suitable for stretching.  The 
following is a list of operating parameters that should be observed to ensure a safe and 
efficient stretch: 
 
 
 
 
 
 
 
 
 
 
 
 

1.

 

Minimum amount of excess canvas 1.5” past the bottom of 
stretcher bar and no more than 2.5”  

2.

 

Minimum stretcher bar width .75” 

3.

 

Maximum stretcher bar width 2.5” 

4.

 

Maximum supply air 120 psi  

5.

 

Minimum supply air pressure 90 psi (required for staple gun) 

 

Safety Precautions

 

Air Pressure

: before applying air to your machine, adjust the regulator at your 

compressor to produce 

90 psi.

 If you are using a pneumatic staple gun please be sure to 

provide what the manufacturer recommends, this may require you to provide a 2 way 
manifold from your compressor.   
 
The Clamping Bar has a dedicated pressure regulator and it is set to a point that will not 
exceed the Stretcher Bar pressure by more than 10 psi.  This is to ensure that the canvas 
is permitted to slip just enough to minimize overstretching. The operating pressure of the 
Clamping Bar is internally preset to 50 psi….

Do Not Adjust This Setting! 

 
 

CAUTION

:

  

the clamp and stretcher bar move slowly, they are deceptively powerful. 

The force behind them can damage your fingers, please ensure that your hands and 
fingers are clear of the clamp at all times.  DO NOT place your fingers between the 
Clamping Bar and Front Plate at anytime. 
 

Summary of Contents for GS-60

Page 1: ...plying air to your machine adjust the regulator at your compressor to produce 90 psi If you are using a pneumatic staple gun please be sure to provide what the manufacturer recommends this may require you to provide a 2 way manifold from your compressor The Clamping Bar has a dedicated pressure regulator and it is set to a point that will not exceed the Stretcher Bar pressure by more than 10 psi T...

Page 2: ...s best accomplished with gusseted brackets that can be purchased at any big box store Snap a line at 3 25 from the top of the workbench and install gusseted brackets on the line It is recommended that a plywood façade be installed on the face of the workbench to provide support for the bottom leg The GS 60 has hose fittings beneath the machine You will need to allow access to these fittings to avo...

Page 3: ...y the forward most tab on the left outside edge where the outside edge of the top mounting plate is 21 125 to the left of the centerline and secure it to the bench using the 2 holes at top of the mount There are 3 additional holes on the face of the mount if you do not want to drill on top of your bench Place the right hand bracket 21 125 to the right of the centerline Please confirm that the dist...

Page 4: ...the 2 front tabs of the mount should rest on each side of the machines support rails as shown in the picture below This keeps the machine from moving left or right The metal set screw on each tab should only be tightened enough to make contact with the inside of the slot on the machine s frame Left bracket tab outside Tapped for 20 metal set screw provided ...

Page 5: ... force A color coded tubing harness is attached to the foot pedal assembly The loose ends must be connected to the under side of the machine pictured below to their corresponding color coded quick connect fittings The Black White are for the clamping pedal the Orange and Yellow are for the stretching pedal and the remaining grey connector is for your staple gun You should have a white plug inserte...

Page 6: ...tted brackets allow for adjustment for different width stretcher bars Setting up Stretcher Plates Video http www youtube com watch v 94rntl0C0rY Position both stretcher plates in the middle of the stretcher bar Favoring one side may cause the stretcher bar to bind so always stretch canvas from the center of the machine Place an assembled wood stretcher frame on top of the stretcher plates as shown...

Page 7: ...d the plates together in and out until the face of the wooden frame is approximately behind the angle bar In other words create a gap so the canvas will waterfall down into the opening when the clamp is closed This step above and below is simulated without the canvas present Tighten all of the screws This setting will not change for any stretcher bar that is this width This procedure would only ne...

Page 8: ...In this position the stretcher bar should extend approximately over the front of the angle bar In summary the wood stretcher bar should be on top of the stretcher plates but the approximately behind the face of the front angle bar in the loaded position In the un loaded position the wood stretcher bar should be approximately in front of the angle bar This is referred to as the Un loaded Position B...

Page 9: ...make a second fold along the image 3 Place the assembled stretcher frame flat side up on the artwork and slide it against the first crease Then slide the outside rail against the second crease This is the fastest way to align your artwork ...

Page 10: ...ays parallel to your edge Adjust air pressure of staple gun so that the staples due not penetrate the canvas 5 Place the stretcher frame on top of the stretcher plates with the starter course away from the operator This is called the loaded position Note the position of the stretcher bar against the mechanical stops ...

Page 11: ... rails will result in an uneven stretch a few inches left and right of center Art larger than 30 may require moving the plates farther apart but try to avoid moving the plates toward the outside rails The outside of the stretcher frame already has strength from the 2 outside rails fortify the center where it is needed 8 Feed the loose end of the canvas into the gap and step on the clamping pedal o...

Page 12: ...hing pedal Be sure to maintain control of the stretcher frame with your free hand It should rest on the outside rail applying only light pressure The stretching pressure should be no more than 15 20 psi to start a stretch Increase the pressure slowly using the regulator on the right side of the machine and let the frame rise no more than 3 4 Do not push the frame flat against the deck Pushing down...

Page 13: ...isfied with the tension you can staple the canvas to the frame with a long nosed pneumatic staple gun The staple gun is operated upside down and the trigger is depressed with the thumb Slide the nose of the staple gun along the angle bar beneath the stretcher frame Place a staple at least 1 every inch 14 Release the stretch by stepping on the stretching pedal Depress the clamping foot pedal again ...

Page 14: ... the artwork and lay it facedown on your work surface as shown Create a slight crease on the corner to define the edge 2 Cut just inside the creased line and stop at the stretcher bar 3 Make your second cut along the stretcher bar as shown in the photo below ...

Page 15: ...ounts are forced out of alignment This is best resolved over the phone If you are experiencing this problem please do not hesitate to contact us at 614 499 4989 and ask for Dave The Canvas is slipping during a stretch The Clamping Bar is preset to 50 psi located beneath the deck this regulator should not be tampered with unless you have been instructed by us to do so Changing this setting may caus...

Page 16: ...eing 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 ...

Page 17: ...retcher plates is half the distance between the center and the outside rail do this for both sides Tips Tricks Large artwork will not typically rise very much during a stretch due to the weight of the stretcher bar The heavier the stretcher bar the less likely it is to rise Most operators would tend to increase the stretching pressure above 50 psi this will cause the canvas to slip out of the grip...

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