jupiter bonnet badge

[vicboddy]

Yes, I know about hens teeth, but does somebody out there have a reasonable --- or even half reasonable ---Jupiter bonnet badge for me? Maybe I have something useful to swop you, what do you want? Thanks vic

[chapman]

Jupiter bonnet badge must be even rarer than hens teeth.
I know a casting company and also a vitreous enamel company so I think it is time we bit the bullet and got some made even if we have to put our name for delivery in a couple of years.
If we cast them in bronze rather than mazak then it would be easier to polish and chrome them.
We need someone to manage this what about Drummond he is good at scratting about getting stuff made at the right price

[Tony Fearn]

Hello Mr. Chapman.

Why don't you speak to Jowett Car Spares and advise them of your contacts, not forgetting to include Drummond in the discussions if necessary?

If JCS can produce both halves of a post-war flat four engine casing, a bonnet badge must be 'small potatoes'. Pre-ordered quantities will reduce the unit price I expect, and JCS is global.

Tony.

[Andy Stevens]

JOAC / John Blaze made a batch about 15 years ago I recall, so it can be done.

Andy

ps I need one too!

[Drummond Black]

Suppose I had better joint this thread. In 1992 / 93 I got a few cast in Edinburgh using a set of patterns and pattern boxes borrowed from a club source. I got them cast in brass which polished up really well and after chroming looked exactly like the original. I currently have the badge set on the car. For the life of me I cannot remember where or whom I borrowed the patterns from. It may have been Bill Lock or an earlier division of JCS

From memory the pattern box was a bit complicated, however, the foundry praised the design. About a year ago I sent a Jupiter Bonnet Badge out to Brian Walker in New Zealand. This one was in serviceable condition. I have various bits in the garage, I think they are all maziac. Will have a hunt during the week.

You definately require patterns to get these cast. Casting is not a problem as the foundry in Edinburgh has opened up again.

Drummond

[Srenner]

Hello All:

How about a CNC bonnet badge? Unlike casting from an original where copy is smaller, it would be an extremely close copy, wouldn't require handwork to get rid of flashing or hand filing to finish the surface. Had one done some time ago and I am trying to get the program from the shop.

The big problem is the enamel inserts.

I spoke to a badge restorer and got an education on the process. The short story: about US$1200 for each mold (need three) and about $300 for each badge produced, regardless of run quantity. This is due to the process being done almost all by hand. A little too pricey for a one off, and pretty expensive for any one wanting one. On the other hand, if you can't find one and you want a proper looking one, there aren't too many choices.

Cheers,
Scott

[chapman]

Hi Scott,
That is not too bad an idea you could use the CNC man to print the patern then give it to Drummond to cast in Edinburgh
Tom

[PJGD]

If you have the 3D model in CAD that is necessary for the CNC machine, why not just use a 3D printer to print the badge; I am sure it would be quicker and cheaper, and adequately durable. These machines are very capable now, particularly the commercial ones.

http://www.dasisolutions.com/index.php/ ... et-desktop

PJGD

[Keith Clements]

These printers only create out of plastic don't they. So how do you chrome and enamel?

[PJGD]

Well, there is plastic and then there is plastic! It is amazing what you can do with these printers now; chrome is no problem at all, Lexan for glass [as in rear light lenses for example] also no problem. Enamel as in the "JOWETT & JUPITER" inserts, I don't know for sure but I think that realistic replacements are possible. When I have time, I may look into it.

Philip

[Srenner]

Having them printed is not a bad idea. I know of a website where small prototype shops will offer quotes on having things printed. I'll look at getting printed when I return from the holidays.

I have seen the small printer that Leno has, but not the big one they use. After scanning and fiddling with the file,they print the part, trial fit to the car and then send the file to their CNC sitting next to the printer. Sure is nice to have $80 million a year for your car hobby!

Also, some of their chrome work is now done using a painting process and is indistinguishable from real chrome. Not sure on the half-life though. I will ask when I return.

I spoke with a CNC shop about the badge and while they can cut all the shapes, the cut they can not make as part of the programming is the notch in the spear where the crosspiece fits. Strikes me as a bit odd, but he says it's not possible and would be done manually on a mill. The programming might be the killer on this, as he figures it will be above US$1000 easily and possibly much more. Will have a programming and a unit cost after New Years.