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Line 72: + + + + − 2. Adjust the height of the hold down for the thickness of material you are using.+ + + + + + + + + − 3. Make sure the air blow-off nozzle is pointing at location in front of the blade. This will remove dust from the cut lines and make it easier to follow your lines. + − 4. Make sure to tension the blade by flipping the blade tension lever. If the blade is not tensioned properly the blade cut will tend to drift and will make it difficult to follow the cut lines. + − 5. Make sure the material is clear of the blade and turn on the power switch. + − 6. Using the blade speed adjustment knob you can set the blade strokes per minute. The EX-21 is capable of producing 400 to 1550 strokes per minute. Normally harder/thicker material will require a slower blade speed. Set the blade around 800 to start with. If you notice burn marks slow down the speed.+ − + − + + + Line 75:
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→Documentation
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|Has certification=https://georgefox.instructure.com/courses/1197
|Has make=Excalibur
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|Has model=EX-21
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==Description==
[[File:Excalibur EX21 Scroll Saw Image.jpg|thumb|Excalibur EX-21 Scroll Saw]]
[[File:Excalibur EX21 Scroll Saw Image.jpg|thumb|Excalibur EX-21 Scroll Saw]]
==Description==
==Description==
The scroll saw is simple machine with an oscillating blade. The thin shallow blade has a very narrow kerf and allows the user to cut fine details and sharp corners. There are a variety of blades available for various types of materials and cuts. Some of the scroll saw uses include wood puzzle making, intarsia projects, and dovetail cutting.
The scroll saw is simple machine with an oscillating blade. The thin shallow blade has a very narrow kerf and allows the user to cut fine details and sharp corners. There are a variety of blades available for various types of materials and cuts. Some of the scroll saw uses include wood puzzle making, intarsia projects, and dovetail cutting. The blade can also be removed and inserted into a drilled hole to give access to the center of an island area in material to cutout the center of an "O" for example. A paper template with a design can be glued onto the top of a work piece and traced.
== Documentation ==
== Documentation ==
[[Media:5da1c223-3df7-4236-8b34-34eb1641764a.pdf|Scroll Saw User Manual]]
====Terminology====
====Terminology====
The scroll saw has an oscillating blade with a variable speed control. The thin narrow blade allows you to make tight turns and produce very detailed cuts.
The scroll saw has an oscillating blade with a variable speed control. The thin narrow blade allows you to make tight turns and produce very detailed cuts.
The cutting angle of the scroll saw can be changed by doing the following:
1. Release the locking lever by rotating it counter-clockwise.
2. Turn the tilting handle left or right as desired.
3. Use the spring loaded indexing pin for common angles.
4. Tighten the locking lever.
====Demonstration====
====Demonstration====
1. Obtain a piece of wood roughly 4" x 4". If the work piece is too small it will be difficult to hold onto.
1. Obtain a piece of wood roughly 4" x 4". If the work piece is too small it will be difficult to hold onto.
2. Using a pencil or pen sketch a letter without a isolated center.
3. Make sure to tension the blade by flipping the blade tension lever. If the blade is not tensioned properly the blade cut will tend to drift and will make it difficult to follow the cut lines.
4. Adjust the height of the hold down and blade guard for the thickness of material you are using.
5. Make sure the air blow-off nozzle is pointing at location in front of the blade. This will remove dust from the cut lines and make it easier to follow your lines.
6. Make sure the material is clear of the blade and turn on the power switch.
7. Using the blade speed adjustment knob you can set the blade strokes per minute. The EX-21 is capable of producing 400 to 1550 strokes per minute. Normally harder/thicker material will require a slower blade speed. Set the blade around 800 to start with. If you notice burn marks slow down the speed.
8. Gently feed the material into the blade while aligning your marks with the blade. Slowly follow the line with the blade and cutout around the letter.
9. Adjust the blade oscillation speed as needed. If the material is showing burn marks you need to slow down the speed.
10. When you finish cutting out the letter turn off the power switch.
11. Detention the blade by flipping the lever above the blade.
12. Reset the space.
==Safety==
==Safety==
There are several hazards you need to be aware of when using a scroll saw.
There are several hazards you need to be aware of when using a scroll saw.
* Keep your fingers and hands away from the blade and all moving parts.
* Keep your fingers and hands away from the blade and all moving parts.
* Always wear proper safety equipment to prevent injury.
* If a blade breaks or gets pulled from the holder turn off the machine and tell the supervisor.
* Always wear proper safety equipment to prevent injury.
* Some woods can create toxic dust so be aware of what you are cutting.
* Hold onto material firmly as the blade will try to lift the material off the table.
* Hold onto material firmly as the blade will try to lift the material off the table.
* Use a brush to clear away chips and sawdust.
* Use a brush to clear away chips and sawdust.
==Certification==
==Certification==
[https://foxtale.georgefox.edu/moodle/course/view.php?id=30802 Foxtale Course]
[https://georgefox.instructure.com/courses/1197 Canvas Quiz]
==Troubleshooting==
==Troubleshooting==
If the blade pulls out of the holder, stop the machine and contact the supervisor. Over tightening the blade holder will damage the threads.
==Maintenance==
==Maintenance==
====General maintenance====
====General maintenance====
There are several items on the machine that will need attention over time.
* Every 10-15 hours of use, the blade tension lever should be lubricated.
* The blade may need to be squared up to the table if it gets out of adjustment.
* The upper arm adjustment screw will need to be adjusted if the upper arm will not stay in the upright position.
* If the blade slips in the holder frequently it is time to change the blade clamp thumb screw.
====Specific Maintenance Tasks====
====Specific Maintenance Tasks====