Laser Cutter/Maintenance

Running cost

• The tube is £250 for 1000 hours
• The lens+mirrors are £150 for 250 hours
• The power is (say) 1.2kW at £.2/kWh.
• So 250/1000 + 150/250 + 1.2*.2 = £1.09/hour
• The space also used a large chunk of funds to get the cutter, this needs to be recouped.

Therefore a recommended donation of £5 for each hour of use would be greatly appreciated.

Laser cutter money held in the the foundation bank account:

Date	Amount
2011-04-02 Usage Fees	+ £210
2011-05-28 Usage Fees	+ £248.44
2011-06-08 Optics set	- £188.25
2011-06-20 Cash from tin	+ £30.00
2011-06-20 Water + tubing change	- £30.00
2011-06-28 Usage Fees	+ £25.04
2011-07-12 Usage Fees	+ £88.46
2011-07-27 Usage Fees	+ £70.58
2011-12-17 Usage Fees	+ £135.66
2012-01-21 Usage Fees	+ £48.72
2012-03-24 Usage Fees	+ £142.12
2012-05-21 Usage Fees (Cleaner)	+ £5
2012-06-02	£69.75
2012-12-01	£110
2012-12-01	£61.53
2012-12-02	£31.14

Cleaning Schedule

• Optics cleaning every 25 hours (or as required)
• Extraction fan cleaning every 25 hours
• Electronics section dust removal every 25 hours
• Laserbed cleaning every 50 hours (soaked in a peroxide based cleaning solution)