CM450PB Safety Tilt Crucible Furnace
|Owing to it's dangerous nature, delicate nature, or expense, this tool requires that you be inducted on it's proper handling before use.|
IntroductionOur casting crucible can melt up to a maximum 2 litres of brass, bronze or aluminium which equates to about 10Kg of copper alloys or 2.9Kg of aluminium and pour it into a variety of molds to form cast metal objects. It's rated for a maximum temperature of 1100C which is sufficient for aluminium, brass, bronze, lead, zinc and tin, but is not suitable for any type of steel, The high-temperature thermocouple from the Forge can be used to check what temperature it's operating at and make sure that it is not over-heated. Owing to the obvious safety needs when working with large ammounts of hot metal, this tool requires induction. The crucible is normally kept in the main workshop, under the workbench on the west side of the the hackspace, and some of the sand and accessories are kept underneath the storage shelves in the lobby area. The casting tray is kept outside behind the rear fire escape door. The manufacturer's instruction manual for the casting crucible can be found here
|10th September 2018||Fully Functional||No reported issues.|
There's no official charge for using the casting crucible, but it does have some costs when it's in use. It consumes gas at the rate of approximately 1Kg/hr, which at 2018 prices is about £2/hr. The crucibles cost approximately £100 and last for a few dozen casts. If you're using scrap metals from around rLab for casting then scrap Aluminium is 75p/Kg (July 2018) so a full crucible would be about £2.25, scrap brass is around £2.80/Kg (July 2018) making a fully charged crucible worth £28. We ask that you consider these costs and think about an appropriate donation in the downstairs honesty pot.
Ian-P provides inductions on the casting equipment
None yet, want to start one?
Ian-P and Steve-R maintain the casting equipment and should be contacted to report any issues.
None found - Casting equipment fully functional and no immediate changes planned or expected
Forming a conventional impression sand-mold using a 3D printed former
Ian(left),Rupert(centre) and Steve(right) positioning the mold and preparing the pour
Ian's completed casting of a candlestick, ready to remove sprus and risers
Steve packing down sand around a PLA mold of a burr for lost-PLA casting
Burning out the PLA in a lost-PLA casting of a burr
The finished burr cast in aluminium, the dull grey surface is a result of contact with burning PLA during the casting
Aluminium beginning to melt as the crucible heats up