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Thread: Furnace build
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29th Aug 2014, 11:53 PM #1
Furnace build
Hi Guys,
I have a mate coming over on Sunday with some Koawool and hard face so i thought i had better cut my drum up and sort out a lid removal mechanism. It's almost there, just need to sort out a handle for the lid.
The burner is likely to be a 1" gas unit from Corin at this stage. These can be drilled to give up to 60kw and it won't ruin the hard face like the oil burner will. I am making the furnace to suit an A25 (4.8l) crucible. Just waiting for it to arrive and then i will make some tongs and a pouring shank, most likely on wheels like Geisser/luckygen's.
I think i will get some petrobond from that guy in QLD.
Ew1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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31st Aug 2014, 10:41 PM #2
Wow, those crickets are loud indeed! Was that a baby i heard crying?
My mate came over today and we lined the furnace with isowool, painted it with rigidizer and then coated it with a product called Super 3000, which is actually a mortar, but he uses it to line gas forges with and was sold to him as an alternative hard face that will cope with up to 1600deg. Just need to get the burner in now and then i can fire it up.....
Ew1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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2nd Sep 2014, 10:05 AM #3Golden Member
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2nd Sep 2014, 06:12 PM #4
The drum is a 60l I think. The rigidizer and hard face came from field furnace in sydney, my mate makes gas forges for knifemakers so he had it all already. I bought the crucible from refractory and ceramic in Melbourne, I think these guys have similar products and are a little closer to you for freight.
Ew1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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6th Sep 2014, 08:21 PM #5Senior Member
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- Newcastle
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Ew,
Would you mind sharing how much the crucible is costing you?
Cheers,
Nick
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6th Sep 2014, 08:50 PM #6
Ahhhh....OUCH! The SiC (Himelt) A25 was $253+GST. Smaller ones can be had on ebay for less but the shipping gets pricey on the larger ones.
Ew1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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7th Sep 2014, 04:56 PM #7Senior Member
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- May 2010
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- Perth
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7th Sep 2014, 05:23 PM #81915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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7th Sep 2014, 05:35 PM #9Senior Member
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10th Sep 2014, 09:03 AM #10Senior Member
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- Sep 2008
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- texas, queensland
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looks like you are making good headway ( its all fun ). i have not long ago built my furnace and am currently building a muller for the sand mixing.
in my furnace i used "superwool " and zircote paint , hopefully its up to the task . i have made an lp gas burner for it too..
johno'If the enemy is in range, so are you.'
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12th Sep 2014, 09:58 PM #11
Mine is a bit of a rush as i need a few one off castings.
The furnace had her first decent heat up yesterday, about 5 minutes. Enough to make the lower half of the hardface glow red. My petrobond arrived yesterday so now i just need to make some flasks and crucible tongs.
Ew1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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13th Sep 2014, 04:14 PM #12Senior Member
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- Jan 2012
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- Hinchinbrook
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- 112
My oil burner furnace gets to bronze temps. I have a refractory lined drum and it is holding up well. There is no unburned fuel on the furnace wall once the temp comes up. At the start it sprays a bit of a mist onto the hotface but once its running properly the atomised oil just vaporises
cheers Phil
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19th Oct 2014, 11:05 PM #13
Well i did my first full fire today, i only stopped cause i ran out of gas.
Ew1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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15th Nov 2014, 10:59 PM #14
Some pics of my first few cast hubs. These are molded in petrobond and poured with nothing but chips i collected from the lathe!
The first one i ran out of ally, the second my riser was not big enough and it solidified before the hub did, meaning the hub pulled itself apart internally with shrinkage. These are a nice shape to mold as the rim is the thinnest part, follow by the plate and then the hub, meaning shrinkage is not so much of a problem.
Still a few air bubbles after machining but getting there. Next stop die casting......
Ew1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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15th Nov 2014, 11:22 PM #15Senior Member
- Join Date
- Sep 2009
- Location
- Newcastle
- Posts
- 341
Nice work.
I'm interested in solid mould casting. How will you be generating / applying the pressure for die casting.
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