Author Topic: Casting Brass (Read 42896 times)

doubleboost · « **Reply #25 on:** May 04, 2010, 05:54:10 PM »

Hi
The holes are to vent the mould the black spray is powderd graphite mixed with alcohol (top tips from Rob Wilson)
The piece we cast was in fact full of blow holes (bronze far to hot)
Rob came over on monday we re cast them in open top moulds the results were perfect
I will put some pictures of the machined parts up
Regards
John

JimM · « **Reply #26 on:** May 05, 2010, 03:23:37 AM »

That looks great fun, I'd love to have a go myself - you're wife must be much more understanding than mine

Where do you get so much brass / bronze from ??? Would plumbing fittings be any good for home casting ?

Cheers

Jim

doubleboost · « **Reply #27 on:** May 05, 2010, 05:00:32 PM »

The bronze cylinder covers cast in the open moulds

Artie · « **Reply #28 on:** May 05, 2010, 06:31:01 PM »

Mate they look fantastic. Is that bronze or brass?

According to MY Guru, bronze is a little easier to cast than brass....

Actually MY Guru

is the same guy as YOUR Guru

..... young fella goes by the name of Rob W....... talks a lot but he knows his stuff......

(he he ... sorry Rob...)

Rob.Wilson · « **Reply #29 on:** May 06, 2010, 04:22:18 PM »

Looking great John

I have had the pleasure to have a look at this engine ,,,,,,,and its a big one

Cheers Rob T ,,,,,,,

Regards Rob

doubleboost · « **Reply #30 on:** May 08, 2010, 05:30:41 PM »

Hi
Been buisy machining the valve covers we cast last week.
Decided to mill our initials in to the faces my mate is called Turner so his is easy.
My M is not so straight forward i think it is going to hit the mark what do you think

Rob.Wilson · « **Reply #31 on:** May 08, 2010, 05:45:47 PM »

Hi John

the valve covers are going to look great with your initial on , nice bit of detail work

Regards Rob

sbwhart · « **Reply #32 on:** May 09, 2010, 01:27:52 AM »

A bit of the old ball slot drill work you can't beat them for a bit of bling

Great work and a very interesting thread

Thanks

Stew

doubleboost · « **Reply #33 on:** May 10, 2010, 05:29:11 PM »

Cast 2 ecentric housings today

Machined one of the valve chest covers

On a more serious note
We scaret the s$£"e out of ourselves .
We poured the bronze in to the mould that went well , the bronze that was left we poured in to a angle iron ingot mould.
The mould was cold and must have had a drop of water in it , a loud poping nouse was followed by a shower of molten metal.
We both escaped injury more or less , have a look at my mates face screen .
Without this the results would have been devistating . Some very serious lessons have been learned

John

Rob.Wilson · « **Reply #34 on:** May 10, 2010, 06:11:54 PM »

Hi John

I a pleased you and Walter are OK ,,,,,,,,, and no real harm was done , i have gone through the same thing .It only takes a very small amount of moisture to come in contact with molten metal to cause a very violent reaction Its good you posted the photos of the face shield ,
LET THIS BE A WARNING TO ANYONE CASTING , WATER AND MOLTEN METAL DO NOT MIX , MAKE SURE ,ALL FOUNDRY TOOLS / INGOT MOULDS / LADLES/ DROSS SKIMMERS /DEGASSING TOOLS ARE PREHEATED AND FREE FROM MOISTURE BEFORE COMING INTO CONTACT WITH ANY MOLTEN METAL AND WERE THE CORRECT PPE

Casting look great John

looking forward to seeing them all machined up ,, Your initial turned out great

Regards Rob

doubleboost · « **Reply #35 on:** May 26, 2010, 06:24:51 PM »

Hi
Put some more casting video up
Sorry about the voice over (must be the wine)

sbwhart · « **Reply #36 on:** May 27, 2010, 02:30:39 AM »

Great stuff very informative

What no bacon butties, must be on a diet

Thanks for showing

Stew

DMIOM · « **Reply #37 on:** May 27, 2010, 03:39:09 AM »

Quote from: sbwhart on May 27, 2010, 02:30:39 AM

Great stuff very informative ..... Thanks for showing

+1

Quote

What no bacon butties, must be on a diet

Well, this being breakfast time (although unfortunately with no fry-up) .... at the very end, where the castings were being dis-interred with what looked like a BBQ/carving fork, I couldn't help thinking they looked like a couple of fried eggs and a square of Ulster Fry or fried bread?

fluxcored · « **Reply #38 on:** May 27, 2010, 04:38:56 AM »

Just love your vids. Very educational and inspiring.

ToniTD1490 · « **Reply #39 on:** May 28, 2010, 05:18:51 PM »

Hi all. Very nice videos. I have a doubt. What did you spray on the drag and cope? It seem graphite. isn't it? Please tell us what is it, and how did you do.

Thanks for sharing your experiences.

ToniTD1490
Spain

doubleboost · « **Reply #40 on:** May 28, 2010, 05:28:49 PM »

Hi
Powderd graphite suspended in brake cleaner
It gives the mould a nice hard skin (advice from master caster Rob Wilson)
John

doubleboost · « **Reply #41 on:** May 29, 2010, 05:33:03 PM »

Machined the ecentric straps we cast last week.
First time i have used a rotary table very clever stuff

First time i have made 2 things the same size

That is a 6 inch chuck i like big engines
John

Rob.Wilson · « **Reply #42 on:** May 29, 2010, 06:01:16 PM »

Hi John

They turned out great

spot on for a first time using a R/T

Regards Rob

Dean W · « **Reply #43 on:** May 30, 2010, 01:05:39 AM »

Nice work! Most people just try turning a few "roundy" things their first try with an R/T.

Dean

Stilldrillin · « **Reply #44 on:** May 30, 2010, 04:00:30 AM »

VERY nicely done for a first go!

David D

doubleboost · « **Reply #45 on:** May 30, 2010, 02:15:21 PM »

Hi
Got some more machining done on the ecentric straps

Found that face plate at a car boot sale today got it for 20 pence

Left hand thread makes setting rod lengths a doddle

I think it would be a good idea to do a project log on this engine if anyone is interested
It is a Hasbrouck No 8 V twin
John

Rob.Wilson · « **Reply #46 on:** May 30, 2010, 03:40:46 PM »

Hi John

See you have had the LH die out

,,,,,,,,,,,, A build log would be GOOD to see

Regards Rob

Stilldrillin · « **Reply #47 on:** May 31, 2010, 03:51:19 AM »

Quote from: Rob.Wilson on May 30, 2010, 03:40:46 PM

Hi John

See you have had the LH die out ,,,,,,,,,,,, A build log would be GOOD to see

Regards Rob

Good thinking Rob!

I thought that, every time I read an update..... Somehow, never got around to asking!

Pleeese!

David D

vtsteam · « **Reply #48 on:** June 13, 2013, 10:23:15 PM »

Quote from: doubleboost on May 28, 2010, 05:28:49 PM

Hi
Powderd graphite suspended in brake cleaner
It gives the mould a nice hard skin (advice from master caster Rob Wilson)
John

Sorry to resurrect this old thread, but I was just reading some of the great stuff in the metalworking archives, including this one when I saw this one little line and it jogged a memory of something pretty frightening about the hazards of brake cleaner when heated. I managed to track down the reference to the warning here:

http://www.brewracingframes.com/id75.htm

Substitute:

The solvent I've seen for graphite mold blacking in most books on casting is just household isopropyl alcohol (rubbing alcohol) and is probably cheaper than brake cleaner anyway.

Again, apologies, but thought this was important to bring up in case someone else tries it.

micktoon · « **Reply #49 on:** June 14, 2013, 06:09:52 AM »

:wave:Hi vtsteam, Well done for posting, that is a scary story and something that anyone could end up doing as the guy who it happened to stated. We are so bombarded with tiny small print warnings on everything from a bottle of water up over, really covering the producers legally more than information for thr user jjudging by the size of prnt, it has had the effect that everyone ignores it all and the really important warnings get swamped within the nanny state stuff.

Maybe it would be worth forum members making a post with a list of REAL serious and likely shop hazards for members to check down and see without reading reams of tiny print on labels, a list of what does reallymatterfromthe horses mouth so to speak.

Thanks for posting ,Cheers Mick.

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Author Topic: Casting Brass (Read 42896 times)

Rob.Wilson

Rob.Wilson

Rob.Wilson

Rob.Wilson

Rob.Wilson