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Difference between revisions of "Big red laser cutter"
Add Known Issues section, remove extraneous spaces, update danger sign rendering
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=== Dangers === | === Dangers === | ||
[[File:Caution-danger-sign.jpg| | [[File:Caution-danger-sign.jpg|frameless|right]] | ||
''Be aware:'' lasers are very dangerous! Review these [https://ehs.mit.edu/workplace-safety-program/laser-cutter-safety/ safety guidelines], and carry an appropriate level of fear of the laser at all times. Hazards include: | ''Be aware:'' lasers are very dangerous! Review these [https://ehs.mit.edu/workplace-safety-program/laser-cutter-safety/ safety guidelines], and carry an appropriate level of fear of the laser at all times. Hazards include: | ||
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To minimize fire risk, remember to... | To minimize fire risk, remember to... | ||
# Never leave laser unattended. Be prepared to respond promptly in case of fire. Familiarize yourself with where the fire extinguisher and water spray bottle are before using. You should never see a prolonged flame while using the laser cutter. | # Never leave laser unattended. Be prepared to respond promptly in case of fire. Familiarize yourself with where the fire extinguisher and water spray bottle are before using. You should never see a prolonged flame while using the laser cutter. | ||
# If you see a candle sized flame for more than 3 seconds while cutting, stop the laser, check/adjust bed height, power/speed settings, or use a different material. | # If you see a candle sized flame for more than 3 seconds while cutting, stop the laser, check/adjust bed height, power/speed settings, or use a different material. | ||
'''Respiratory Hazard''' | '''Respiratory Hazard''' | ||
Laser cutters create fumes and small particulates. | Laser cutters create fumes and small particulates. | ||
To minimize respiratory hazards, remember to... | To minimize respiratory hazards, remember to... | ||
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This is how to reset the [[breaker]] that the laser (and sewing/3dprinting/hardware corner) is on. | This is how to reset the [[breaker]] that the laser (and sewing/3dprinting/hardware corner) is on. | ||
== Known Issues == | |||
Firstly, this thing is '''''great''''' and we love it, flaws and all! Here are some quirks that should be solved or worked around. | |||
=== Crooked Bed === | |||
[[File:Crooked cut bed.png|thumb|right|alt=Graphic depicting cut bed and laser range, cut bed is crooked, rotated slightly anti-clockwise|Crooked bed]] | |||
The cut bed and guides are rotated slightly anti-clockwise, this means anything you align to the guide will be off a bit of what you may expect. For example, a straight horizontal line engraved on a piece aligned to the left edge guide will appear at a downward angle from left to right, on the piece. This also means if you start at (0, 0) and cut straight down ''you'll cut into the the guide'', oh no! | |||
'''Work around:''' There is a simple jig that's been cut and lives on the bed, it's a brown piece of MDF. If you want a square cut using the jig, place your piece in the top left corner against the jig and position the laser at x=21.9, y=0 (two presses of the right arrow on the controller). | |||
=== Non-Level Bed === | |||
There appears to be a slight slope starting at (0, 0) from left to right the bed rises about 1mm over 10cm. This warrants further investigation, might be only near top left of cut bed, doesn't appear/shouldn't have dramatic affect on cuts. | |||
=== Laser Pointer === | |||
Not to be confused with the powerful laser used to engrave and cut, this is a helpful little laser that points to ''where'' a cut will be made. It appears not to work at the moment. | |||
== Operation Instructions == | == Operation Instructions == | ||
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# Select "absolute coordinates" to define the placement relative to the bed. Select "user origin" to set the placement on the bed manually. The device should be set to ttyUSB0, Ruida664GX. | # Select "absolute coordinates" to define the placement relative to the bed. Select "user origin" to set the placement on the bed manually. The device should be set to ttyUSB0, Ruida664GX. | ||
# Once happy with design, click “Send” | # Once happy with design, click “Send” | ||
# Enter a name (or just use default to override) and press enter. | # Enter a name (or just use default to override) and press enter. | ||
# Wait for the file to send. | # Wait for the file to send. | ||
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# Scroll and press “Enter” to select a file. | # Scroll and press “Enter” to select a file. | ||
# Set the origin if necessary. | # Set the origin if necessary. | ||
# Press “Frame" to confirm placement. When you press this, the laser cutter head will trace around the max coordinates, to show you where your design will be cut. | # Press “Frame" to confirm placement. When you press this, the laser cutter head will trace around the max coordinates, to show you where your design will be cut. | ||
# If the frame is correct press “Start”, and the laser will run. | # If the frame is correct press “Start”, and the laser will run. | ||
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I'm trying to install [https://laserweb.yurl.ch/|LaserWeb]. | I'm trying to install [https://laserweb.yurl.ch/|LaserWeb]. | ||
I ran the commands here: https://laserweb.yurl.ch/documentation/installation/36-install-raspberry-pi. But the server gave an error when started: | I ran the commands here: https://laserweb.yurl.ch/documentation/installation/36-install-raspberry-pi. But the server gave an error when started: | ||
<nowiki> | <nowiki> | ||
Server binding to all local IP addresses on port: 8000 | Server binding to all local IP addresses on port: 8000 | ||
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translate([0,0,ID_LIP_THICK]) cylinder(d=ID, h=THICKNESS, $fn=100); | translate([0,0,ID_LIP_THICK]) cylinder(d=ID, h=THICKNESS, $fn=100); | ||
translate([0,0,-0.5]) cylinder(d=ID_LIP, h=THICKNESS, $fn=100); | translate([0,0,-0.5]) cylinder(d=ID_LIP, h=THICKNESS, $fn=100); | ||
} | } | ||
}</nowiki> | }</nowiki> | ||
[[File:Laserduct.png|3D printing exhaust duct adapter|thumb]] | [[File:Laserduct.png|3D printing exhaust duct adapter|thumb]] | ||