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projects:lasercutterventingsystem

Laser Cutter Venting System

NOTICE:
Laser cutters are expensive and dangerous.
All of our laser cutters are ducted and require venting.
YOU MUST turn the ventilation system on before you use any of the cutters.
Do not leave them unattended. It is a fire hazard.
Some jobs take a long time to run. If you need to run to the bathroom or something, find someone to watch it for you.
A full tutorial is in progress: Laser Cutter HOW TO
60-watt Operation Training Video

Verison 1.0 - Chase (Oct 2011 - Jan 2012)

Photos

Description

  • Fan: 1/2 HP Vacuum Pump
  • Control: Mitsubishi FR-A204 Variable Frequency Drive
  • Ducting: 1-1/2“ PVC
  • Discharge location: Loft
  • Machines vented: (1) Laser Cutter (25 watt)

Notes

  • Version 1.0 was scrapped and much of the ducting rerouted when the Laser Cutter (25 watt) was relocated to the south wall of the Workshop.
  • For a very brief period of time we used a shop vac to exhaust the machine.

Verison 2.0 - Chase (Jan 2012 - May 2012)

Description

  • Fan: 1/2 HP Vacuum Pump
  • Control: Mitsubishi FR-A204 Variable Frequency Drive
  • Ducting: 1-1/2” PVC
  • Discharge location: Loft
  • Machines vented: (1) Laser Cutter (25 watt)

Notes

  • The shorter duct run improved air flow over Version 1.0.

Verison 3.0 - Chase (May 2012 - Dec 2012)

Photos

Description

Notes

  • Added a flexible plastic duct and tee with slide gate dampers for second machine.

Verison 4.0 - Lenox (Feb 2013 - Dec 2013)

Photos

Description

  • Fan: 1 HP Central Machinery Fan, Model 94029 (Purchased from Harbor Freight)
  • Control: On/Off Switch
  • Ducting: 4” PVC and 4“ Flexible Plastic Duct
  • Discharge location: Outdoors, louver on north side of building
  • Machines vented: (2)

Notes

Verison 5.0 - Lenox (Dec 2013 - Mar 2015)

Photos



Description

Notes

Verison 5.1 - Lenox (Mar 2015 - Mar 2017)

Photos

Description

  • Minor change to controls only
  • Replaced low-med-high with on-off turn switch (low is the only setting we need)
  • Replaced indicator lights which kept burning out?
  • Removed pressure switch
  • Added emergency stop
  • Plastic box replaced with more rugged, metal enclosure

Notes

  • New controls and vinyl signage by Brant

Verison 5.2 - Lenox (Mar 2017 - Mar 2017)

Photos

Description

  • Added a filter box to the laser cutter exhaust (pollution control unit)
  • Two sets of (2) 16x20x1 furnace filters; one set has activated carbon poured over it
  • Activated carbon available from aquarium supply stores
  • Two 4” inlets (50 & 60 watt) and one 4“ outlet connection
  • No change to the on/off switch in the room
  • Increased fan speed on motor drive from 30.0 to 49.0 Hz
  • Increased static pressure at unused duct drop from 2.0 to 5.0 inches water column
  • EDIT: Did not work, little to no flow at the inlets to the filter box, even after caulking all the joints and resealing the drawers. MDF is just too porous/leaky. Disassembled and abandoned on 6/4/17.

Notes

Verison 5.3 - Lenox (Mar 2017 - Apr 2017)

Photos

Description

  • 4” subsoil drain pipe with charcoal sandwiched between two layers of 3/4“ fiber roll media
  • Instantly plugged up, very restricted
  • Air assist upgrades completed at the same time
  • Individual controls at each laser cutter and air valves/regulators for each machine

Notes

  • Filter by Brant
  • Air dryers, separators, and filters provided by ChrisH
  • Extra help by TomGz, ShaneT, and TonyW

Verison 5.4 - Lenox (Apr 2017 - Apr 2017)

Description

  • 4” subsoil drain pipe with charcoal sandwiched between two layers of 1/8“ hardware cloth
  • Installed on the 50 watt, works OK

Notes

Verison 5.5 - Lenox (Apr 2017 - Present)

Photos

Description

  • Sterilite plastic container with two 4” atrium grate drains and a DIY charcoal filter
  • Seems to be working OK as of May 2nd, will check again
  • PVC cement failed on 5/12/17 while BrandonM. was cleaning around the machine
  • Filter repaired and cleaned on 5/30/17

Notes

projects/lasercutterventingsystem.txt · Last modified: 2017/06/11 13:31 by branth