Laser Cutter/Maintenance: Difference between revisions

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== Running cost ==
== Running cost ==


*The tube is £250 for 1000 hours
* The tube is £250 for 300 hours
*The lens+mirrors are £150 for 250 hours
* The PSU is £300 for 750 hours
*The power is (say) 1.2kW at £.2/kWh.
* The lens+mirrors are £50 for 200 hours
*So 250/1000 + 150/250 + 1.2*.2 = £1.09/hour
* The expected useful lifetime of the machine is around about 2750 hours, with a replacement cost estimated at £7000.
*The space also used a large chunk of funds to get the cutter, this needs to be recouped.
* The power is (say) 1.2kW at £.2/kWh.


'''Therefore a recommended donation of £5 for each hour of use would be greatly appreciated.'''
250/300 + 300/750 + 50/200 + 7000/2750 + 1.2*.2 = £4.30/hour


Laser cutter money held in the the foundation bank account:
Laser cutter money held in the the foundation bank account:
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|-
|-
! Date
! Date
! Notse
! Amount
! Amount
|-
|-
| 2011-04-02 Usage Fees
| 2011-04-02
| Usage Fees
| + £210
| + £210
|-
|-
| 2011-05-28 Usage Fees
| 2011-05-28
| Usage Fees
| + £248.44
| + £248.44
|-
|-
| 2011-06-08 Optics set
| 2011-06-08
| Optics set
| - £188.25
| - £188.25
|-
|-
| 2011-06-20 Cash from tin
| 2011-06-20
| Cash from tin
| + £30.00
| + £30.00
|-
|-
| 2011-06-20 Water + tubing change
| 2011-06-20
| Water + tubing change
| - £30.00
| - £30.00
|-
|-
| 2011-06-28 Usage Fees
| 2011-06-28
| Usage Fees
| + £25.04
| + £25.04
|-
|-
| 2011-07-12 Usage Fees
| 2011-07-12
| Usage Fees
| + £88.46
| + £88.46
|-
|-
| 2011-07-27 Usage Fees
| 2011-07-27
| Usage Fees
| + £70.58
| + £70.58
|-
|-
| 2011-12-17 Usage Fees
| 2011-12-17
| Usage Fees
| + £135.66
| + £135.66
|-
|-
| 2012-01-21 Usage Fees
| 2012-01-21
| Usage Fees
| + £48.72
| + £48.72
|-
|-
| 2012-03-24 Usage Fees
| 2012-03-24
| Usage Fees
| + £142.12
| + £142.12
|-
|-
| 2012-05-21 Usage Fees (Cleaner)
| 2012-05-21
| Usage Fees (Cleaner)
| + £5
| + £5
|-
|-
| 2012-06-02
| 2012-06-02
|
| £69.75
| £69.75
|-
|-
| 2012-12-01
| 2012-12-01
|
| £110
| £110
|-
|-
| 2012-12-01
| 2012-12-01
|
| £61.53
| £61.53
|-
|-
| 2012-12-02
| 2012-12-02
|
| £31.14
| £31.14
|-
|-
! Running total
| 2012-12-19
| £780.77
|
| £59
|-
| 2013-1-2
|
| £34.50
|-
| 2013-1-15
|
| £38.38
|-
| 2013-2-1
|
| £119.37
|-
| 2013-2-12
|
| £25
|-
| 2013-2-20
|
| £88.80
|-
| 2013-9-18
|
| £700
|}
|}


Latest revision as of 22:28, 15 January 2014

Running cost

  • The tube is £250 for 300 hours
  • The PSU is £300 for 750 hours
  • The lens+mirrors are £50 for 200 hours
  • The expected useful lifetime of the machine is around about 2750 hours, with a replacement cost estimated at £7000.
  • The power is (say) 1.2kW at £.2/kWh.

250/300 + 300/750 + 50/200 + 7000/2750 + 1.2*.2 = £4.30/hour

Laser cutter money held in the the foundation bank account:

Date Notse 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
2012-12-19 £59
2013-1-2 £34.50
2013-1-15 £38.38
2013-2-1 £119.37
2013-2-12 £25
2013-2-20 £88.80
2013-9-18 £700

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)
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