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Line 80: − Demonstrate you can safely setup the saw and rip a board. You will then proceed to cross cut one of the remaining pieces. Remember to set the blade height so it is protruding less than 1/8" out the top of material for less exposure. When performing a rip cut the fence is used to guide the lumber into the blade. You want to make sure that the distance between the fence and blade is the width of desired cut. Mark the edge of the material when doing a cross cut so you can align the material with the blade in the sled. You can also use a miter gauge for making cross cuts but make sure the material is long enough and well supported.+ Line 95:
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|Has imagedesc= Miller 250 DX
|Has imagedesc= Miller 250 DX
|Has description=
|Has description=
|Has certification=
|Has certification=https://georgefox.instructure.com/courses/1270
|Has make= Miller
|Has make= Miller
|Has model=Syncrowave 250DX
|Has model=Syncrowave 250DX
|Has ace=Jack Ellis;jellis17@georgefox.edu
|Has serial number=MJ430071L
|Has ace=Levi Gibson;lgibson19@georgefox.edu
}}
}}
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__TOC__
==Safety First==
[[File:Safety First HD2.png|left|150px]]
* Don't exceed gas pressure past specified value
* Don't weld with gas off
* Always use a welding helmet and proper PPE
* Don't weld in wet gear or standing water
* Don't unscrew regulator adjusting screw all the way out
* Make sure ground clamp is connected to work
==Description==
==Description==
TIG stands for tungsten inert gas and is technically called gas tungsten arc welding (GTAW). The process uses a tungsten electrode located in a hand held torch that delivers the current to the welding arc. The tungsten and weld puddle are shielded and cooled with argon gas. A filler rod is used to manually add material to the weld puddle. During the welding process the tungsten should never touch the work piece. When this happens you will need to remove the tungsten and regrind the tip. Some of the advantages of this type of welding include strong high quality welds and many material options. One disadvantages of TIG welding is the speed is much slower compared to some of the other welding methods.
TIG stands for tungsten inert gas and is technically called gas tungsten arc welding (GTAW). The process uses a tungsten electrode located in a hand held torch that delivers the current to the welding arc. The tungsten and weld puddle are shielded and cooled with argon gas. A filler rod is used to manually add material to the weld puddle. During the welding process the tungsten should never touch the work piece. When this happens you will need to remove the tungsten and regrind the tip. Depending on the material being welded, TIG welding can be performed using either AC or DC current. Some of the advantages of this type of welding include strong high quality welds and many material options. One disadvantages of TIG welding is the speed is much slower compared to some of the other welding methods.
{{#evu:https://www.youtube.com/watch?list=RDCMUCTRI9Us8zLiywY29vsW3kKg&v=tNYmo2_DI6c&feature=emb_rel_end}}
{{#evu:https://www.youtube.com/watch?list=RDCMUCTRI9Us8zLiywY29vsW3kKg&v=tNYmo2_DI6c&feature=emb_rel_end}}
{{#evu:https://www.youtube.com/watch?v=KvI0177YgrA}}
==Documentation==
==Documentation==
[[Media:O359H MIL.pdf|TIG Welder User Manual]]
====Terminology====
====Terminology====
====Demonstration====
====Demonstration====
The demonstration consists of two parts. For the first part you will need to setup the welder and safely attempt to weld a bead. The second part will require you to show knowledge of safely using the grinder and successfully grind a point on a tungsten rod.
====General Procedure====
====General Procedure====
*Turn off the welder
*Turn off the welder
*Remove ground clamp
*Remove ground clamp
==Certification==
==Certification==
[https://foxtale.georgefox.edu/moodle/course/view.php?id=31322 Foxtale Course]
[https://georgefox.instructure.com/courses/1270 Canvas Quiz]
==Troubleshooting==
==Troubleshooting==
!Done By
!Done By
|-
|-
|Check Argon Pressure
|Check Argon Tank Pressure
|Before Use
|Before Use
|Student/Tech
|Student/Tech
|Check Coolant Flow
|Check Coolant Flow
|Before Use
|Before Use
|Student/Tech
|Student
|-
|-
|Inspect collet & Cup
|Inspect collet & Cup