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--- laserinfo:equipment [2007/04/08 19:42]
chrisknight Added information about the Helix 24 and Fire extinguishers
+++ laserinfo:equipment [2010/01/08 10:09]
wacodis
@@ Line 7: / Line 7: @@
 [[http://www.epiloglaser.com/mini24_overview.htm|Epilog Mini 24]] (Adafruit Laser uses the 35 watt model)
-Available from [[Epilog laser|Epilog Laser]]
-**Wattages**: 35, 40 and 45 watts
+Available from [[http://www.epiloglaser.com/|Epilog Laser]]
+**Wattages**: 30, 40, 50, and 60 watts. ''(updated 01/10)''
 **Work area**: 24 " x 12" (610 x 305 mm)
 **Z-stroke**: Holds items up to 8" tall (203 mm).
 ===== Epilog Helix =====
-[[http://www.ghostmarking.com/Photos/displayimage.php?album=5&pos=0|{{http://www.ghostmarking.com/Photos/albums/Equipment/Epilog_Helix_45w.jpg|http://www.ghostmarking/Phots/}}]]
+[[http://www.ghostwheel.com/GhostMarking/Epilog_Helix_45w.jpg|{{http://www.ghostwheel.com/GhostMarking/Epilog_Helix_45w.jpg|http://www.ghostwheel.com/GhostMarking/Epilog_Helix_45w.jpg}}]]
+[[http://www.epiloglaser.com/helix24_overview.htm|Epilog Helix 24]]
-[[http://www.epiloglaser.com/helix24_overview.htm|Epilog Helix 24]] (Ghost Marking uses the 45 watt model of the Helix)
 Available from [[http://www.epiloglaser.com/|Epilog Laser]]
-**Wattages**: 35, 40, 45, 60 and 75 watts
+**Wattages**: 30, 40, 50, 60, and 75 watts. ''(Updated 01/10)''
 **Work area**: 24 " x 18 " (610 x 457 mm)
@@ Line 38: / Line 41: @@
 **The laser can etch**: Glass, coated metals, ceramic, marble, anodized aluminum, stainless steel, painted metals, tiles, wood, plastic, acrylic, delrin, cloth, leather, matte board, melamine, paper, mylar, pressboard, rubber, wood veneer, fiberglass, cork, corian.
-These lasers __cannot__ cut metal or PVC. Metal can be marked using a spray.
+These lasers __cannot__ be used to cut or etch **PVC** or **vinyl** because chemicals are released that will destroy the optics and void the warranty. Some metals can be etched directly, but harder metals such as steel can only be marked using a spray called Cermark and available from [[http://www.laserbits.com/|LaserBits]].
 === Notes: ===
@@ Line 91: / Line 94: @@
 {{http://farm1.static.flickr.com/133/414932623_92af980537_o.jpg}}
-**Steel cart** - we use a [[http://www.mcmaster.com/nav/enter.asp?partnum=4633T1&pagenum=1145|4633T1 Bolt-Together Steel Cart]] with Open Shelves 500# Capacity, 32" Top Shelf Height, 36" X 24" Shelf from McMaster-Carr - $86.
+**Steel cart** - we use a [[http://www.mcmaster.com/nav/enter.asp?partnum=4633T1&pagenum=1145|4633T1 Bolt-Together Steel Cart]] with Open Shelves 500# Capacity, 32" Top Shelf Height, 36" X 24" Shelf from McMaster-Carr - $86. (price is currently $107.09 as of October '08)
-**Extra shelf** - 36" L X 24" W  [[http://www.mcmaster.com/nav/enter.asp?partnum=4633T63&pagenum=1145|Extra Shelf for 500 lb Capacity Light Duty Steel Cart]] from McMaster-Carr $26
+**Extra shelf** - 36" L X 24" W  [[http://www.mcmaster.com/nav/enter.asp?partnum=4633T63&pagenum=1145|Extra Shelf for 500 lb Capacity Light Duty Steel Cart]] from McMaster-Carr $26 ($31.34 as of October 08)
 **Extra drawer** - 12" W X 18" D X 4" H  [[http://www.mcmaster.com/nav/enter.asp?partnum=4633T66&pagenum=1145|Optional Drawer for Light Duty Steel Cart]]
@@ Line 102: / Line 105: @@
 ===== Fire Extinguishers =====
-Fire extinguishers are an absolute necessity.  Not only can the materials being etched catch fire, but the gases released can ignite as they pass through the laser beam.  Epilog recommends CO2 fire extinguishers because they do not contain chemicals that would be harmful to the mechanics or optics of the system.  CO2 fire extinguishers have the added benefit of being easily refilled, available used and inspected from licensed fire extinguisher service companies, and fun at parties.  Ghost marking picked up two 5lbs CO2 fire extinguishers for $65 each from:
+Fire extinguishers are an absolute necessity. Not only can the materials being etched catch fire, but the gases released can ignite as they pass through the laser beam.  <del>Epilog recommends CO2 fire extinguishers because they do not contain chemicals that would be harmful to the mechanics or optics of the system.</del> Class A extinguishers are for ordinary combustible materials such as paper, wood, cardboard, and most plastics (the stuff you're most likely lasering that could catch fire). CO2 fire extinguishers don't work very well on class A fires because they may not be able to displace enough oxygen to put the fire out, causing it to re-ignite. Remember, Carbon Dioxide (CO2) extinguishers are used for class B and C fires.
+**Epilog recommends a Halotron fire extinguisher or a multi-purpose dry chemical fire extinguisher**. The Halotron extinguishers are more expensive than a dry chemical, but offer certain advantages should you ever need to use an extinguisher. The Halotron extinguisher discharges a clean, easily removable substance that is not harmful to the mechanics or wiring of the laser system. The dry chemical extinguisher discharges a sticky, corrosive powder that is very difficult to clean up.
+That said, Halotron fire extinguishers have fallen out of favor for other "clean agent" fire extinguishers that are not "ozone depleting". These alternatives are even more expensive, which is why finding a used (re-certified) Halotron I extinguisher may be your best bet.
+While CO2 fire extinguishers have the  benefit of being easily refilled, available used and inspected from licensed fire extinguisher service companies, and fun at parties - they are not recommended for protecting your laser.
+Ghost marking picked up two 5lbs CO2 fire extinguishers for $65 each from:
     ACME Fire Extinguishers
 Fruitvale Ave
     Oakland, CA 94601
--532-4040
+    (510) 532-4040
+Halotron I fire extinguishers start at about $120 for 2.5lb; $200 for 5lb; I purchased a re-certified 11 lb. for $200, which would have gone new for $439 from:
+    Megacity Fire Protection
+Expansion Way
+    Dayton, OH 45424
+    (937) 879-5000
+Halotron is considered a hazardous material, and will incur additional shipping charges if purchased online; it'd be best to check with a local distributor to see if they can beat the combined price!

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