The next video, where we turn this casting into a precise part for the Z axis https://youtu.be/l0d9gyGMwyw
23 tips that have really helped to improve the quality of the parts we can cast with molten aluminum, from our home furnace. In the process, we make a large casting for the CNC machine we have been building.
If you got something out of this and would like to show Sam and me some love, go here https://ko-fi.com/floweringelbow and shout us a coffee or buy the 3D model of the CNC or our metalized epoxy guide.
@olfoundryman8418's channel: https://youtu.be/m6W71s-cd_0 this is a good video on the pouring technique to get started, but see his others too.
@luckygen1001's channel is also wonderfully good for all things casting related - you could start here with the video I referred to about de-gassing https://youtu.be/Z1iZMlEt9Pw
See also this video by MetalMusings, if you are interested in de-gassing: https://youtu.be/fBJMPXxYpmE
Our video about easy heat-treatment of castings at home: https://youtu.be/z5ejhb1t8BY
Andrew Martin's video about 'surge traps' aka 'spin traps' https://youtu.be/3Ozv7virlzM
Which alloy to use for casting blog post: http://www.floweringelbow.org/which-scrap-aluminium-to-use-for-casting/
00:00 Intro to the casting project and tips.
00:27 1. Why stop making aluminium muffins?
01:30 2. How to avoid 'drop out'.
02:19 3. Ways to modify flasks.
02:50 4. 'Directional solidification' and what it means for castings.
03:47 5. Notes on parting dust.
04:20 6. Rammer tech.
04:45 7. Consider green sand 'permiability'.
05:17 8. Prepare for mistakes.
05:38 9. How to coat patterns for easy removal.
07:00 10. Why add a 'spin trap'?
07:30 11. The 'very shallow drag' strategy.
08:57 12. The use of compressed air.
09:40 13. Put handles by the pins on the cope.
10:07 14. The pouring basin.
10:40 15. Which aluminium alloy to use?
10:59 16. Vent holes
11:45 17. Why be snappy about the melt?
12:23 18. Pre-heating and why it's important.
12:40 19. Doing a 'dry run'.
13:17 20. The crucible is how full!?
13:54 21. Pouring technique.
15:16 22. The significance of relative humidity.
16:49 23. How to analyse the casting.
Aluminum and Aluminum Alloys, Elwin L Rooy in ASM handbook vol.15 - http://s1.iran-mavad.com/ASM%20hanbooks/Vol_15_casting_iran-mavad.com.pdf
AFS Transactions 2005 American Foundry Society, paper the graph was from: https://www.jetir.org/papers/JETIR2106573.pdf
Lets Connect!
Ko-fi: Shout us a coffee: https://ko-fi.com/floweringelbow
Our website: http://www.FloweringElbow.org
FB: https://www.facebook.com/floweringelbow/