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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:
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
: the clamp and stretcher bar move slowly, they are deceptively powerful.
CAUTION
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.
Instruction Manual
GS-60
:
http://www.youtube.com/user/dweaverframe?feature=mhee
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)
psi....Do Not Adjust This Setting!
1
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Summary of Contents for GALLERY STRETCHER-240
- Page 1 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: Minimum amount of excess canvas 1.5”...
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Page 2: Unpacking And Setup
Unpacking & Set-up Inside The Box (1) Two foot pedals (detent type) mounted on base plate (1) Pair Stretcher Blocks (1) Instruction manual (1) Pair safety glasses (2) T-wrenches (1) Air hose to machine Bench Mounting (Gusseted Brackets not included) Your machine was designed to be mounted in front of a typical workbench this is the most effective method. - Page 3 Universal Mount Installation (Optional Equipment) (Detailed Instructions & Video) The universal bench mount consists of (1) pair of brackets for a 60” machine and (2) pair of brackets for a 96” machine. The brackets are paired so that there is a left-hand and right-hand bracket, (refer to photo at bottom of page) indicated by the small tab on each bracket that favors one side as viewed from the front.
- Page 4 Set machine on universal mount by placing the back rail of the machine into the 2 rear slots. Tilt the machine as shown and lower the front onto the mount, the 2 front tabs of the mount should rest on each side of the machines support rails as shown in the picture below.
- Page 5 Foot Pedals & Mount There are (2) foot pedals located on a steel plate. The pedal on the right controls the “Clamping Bar”, the pedal on the left controls the “Stretching Bar”. Both foot pedals are configured to allow air to flow when depressed. DO NOT have any part of your body near the bars when in motion.
- Page 6 How to use Custom Stretcher Plates The Custom Stretcher Plates, shown below, are included with your machine. The (4) screws mounted on the stretcher bar allow the slotted brackets to slide in and out. The slotted brackets allow for adjustment for different width stretcher bars. Setting-up Stretcher Plates Video: http://www.youtube.com/watch?v=94rntl0C0rY...
- Page 7 Position the frame so that it is against the “mechanical stops”, the short tab of metal about 1/8” high (these stops also facilitate alignment during the stretch). Loosen the (4) screws on each of the slotted stretcher plates. Apply air to your machine and verify that the clamping bar is open. Move the assembled frame and the plates together in and out until the face of the wooden frame is approximately ½”...
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Page 8: Basic Operation
LOADED AND UN-LOADED POSITIONS Once the stretcher bars are adjusted and you are ready to stretch you need to remember that all stretches start in the “un-loaded_ position. When the operator is ready to stretch the canvas they would “clamp” the canvas and then move the wood stretcher frame forward and off of the stretcher plates, it should now be resting on the angle bar in front of the plates. - Page 9 2. Turn the artwork 90 degrees and 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 4. Once the artwork is aligned create the “starter course” using a pneumatic staple gun. Be sure that the artwork stays parallel to your edge. Adjust air pressure of staple gun so that the staples due not penetrate the canvas. 5.
- Page 11 6. From the front of the machine there should be enough of a gap between the angle bar and the clamping bar so that the canvas will “waterfall down” into the opening. The operator should not have to feed the canvas in by hand in most cases. 7.
- Page 12 9. Once the canvas is clamped and you are satisfied with the alignment move the entire assembly forward and off of the plates. This is referred to as the “un-loaded” position. The stretcher frame should be in front of the plates and the canvas should be held fast beneath the clamp.
- Page 13 11. The pressure gauge on the right side of your stretching machine indicates regulated air pressure to the “stretching plates”. It is a safe practice to always start a stretch at around 15 – 20 psi this is accomplished with the Stretcher Bar Regulator.
- Page 14 Cutting Excess Canvas 1. After the first stretch, remove 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.
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Page 15: Troubleshooting
4. Rotate the artwork 180 degrees and repeat the process. Place the artwork back on the stretcher plates in the “loaded position” and continue with the remaining stretches. Troubleshooting Every machine leaves our facility fully assembled and tested, however, during transit it is possible that the contents may have experienced some “sudden changes in motion”, this can lead to misalignment issues and even breakage. - Page 16 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.
- Page 17 and is not likely to return to it’s original condition. Our belief is that stretching light giclees at 15-20 psi is more than sufficient and that heavy canvas should be no more than 30-40 psi. Stretching Large Art Artwork larger than 30” x 30” should probably be made with a cross-brace; this will reduce the amount of deflection of the stretcher bar during a stretch.