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| Peter Cordell:
Materials used in construction Fire bricks good upto 1700c REX C100 Digital PID Controller Regulator 25A SSR Relay 1250 C Thermocouple K type 100mm Probe Sensor 4 206x4mm Forging Pottery Heating Heater Element Wire Coil 500W 16amp rocker switch 16 amp heat resistant wire High Temperature Ceramic Fiber Blanket 15mm Some thin steel sheet, 6mm studing, 15mm sq bar, 25mm angle, clear plexiglass 2 x 4kg Graphite Crucible did try some electric fire heater elements but these melt over 300c so it turned out :doh: |
| Peter Cordell:
End result some covers for my mini mill dro need a little machining to clean them up |
| John Rudd:
Nice project.... :thumbup: :thumbup: But I dont fancy your electric bill.....lol.. |
| shipto:
--- Quote from: John Rudd on October 17, 2017, 03:26:02 PM ---Nice project.... :thumbup: :thumbup: But I dont fancy your electric bill.....lol.. --- End quote --- With the controller the electric bill is not as bad as you would think mine is around 4.8kw and it melts aluminium really quick and once up to temperature it turns the element on for a few seconds then off for 4-5 seconds. I havent done the sums but I melt about 1.6 litres in approx 30 minutes. The big advantage is you can hold it until you need to pour. |
| Peter Cordell:
As it takes just under 30min to hit 750c but you have to remove the crucible to top it up as the aluminium melts down, so over all its running for about an hour, if i got me maths right 2000watts per hour at 11.620Kwh = 23.24p per melt |
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