my Sphere turning jig (home made)

[mike toulouzas]

dont worry guys its only steel .Airplanes are made from aluminum and now slowly slowly from composites.
I have read all the posts and i like that you are trying to guess all the problems before you use a tool. :-/My opinion is that Practice makes perfect.The problems with the head chuck is solved by simply gluing or attaching a long piece like a Jam chuck ,to get away from it or When i will make a ball i will have some pics taken to see what i mean.i Like very much our forum. :-*Now i have a question  and Iwill post a new topic... Pllaning puzzle

[Canuck]

Oh I'll be looking forward to those pics ...I'd really like to hear from the 'Pelikan' boys about their 'sphere' turning techniques, maybe Bernhard will take some pics next time he visits their workshop in the Czech Republic

[Trooper]

Okay, but how long before we see a prototype from 'Trooper'

I'm a bit busy at the moment ladies, to get much done on this project.  The street-fishing is over for now but there's still floodwater, snakes and crocodiles everywhere.  Still wet enough to bog a duck with a lot of smaller towns still with 6' of water in the main street and through the houses!  One half the country is on fire and the other half is completely flooded.  As soon as things get back to normal I'll get onto this prototype.  Chinny is in the middle and neither the floods or the flames are game to go anywhere near him.  I think it might have something to do with Medusa.   

[Johan Heyns]

OK Gents, the basic idea.  Most of it is made of 10 x 20mm mild steel flat bar, so it looks a bit overdone, but I have no assurance as "designer" that the thing will be used within reasonable limits, so it is strong to prevent the wild chinny turners of the world from breaking it, or being harmed by it due to abuse.

Three views, to, end and front.  Note that the toolpost is not there yet.  On the top view, it will sit perpendicular to the centerline of the workpiece.  The slide is 30° of perpendicular to the centerline of the workpiece.

Since you are all turners, it should not be difficult to turn the shaft and the pipe holder.  Metal of course. 

Once I've heard some feedback, I'll finalize the drawings and send it to John who can send it to anybody who wants a copy of the drawings.

John's lathe is 185 center to top of bed and the gap in the bed is 38mm.   

Boet, I need some photos of the kind off tools you will use for this in order to finalize the toolpost.

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[Canuck]

Very nice design Ou Toppie!!!

I'll attach pics of the style of cutter

[Canuck]

Here's a pic of the sort of tool I'd probably use....the 1/2"square shaft with round carbide cutter




http://www.youtube.com/watch?v=du0ifM_sfAo&eurl=http://www.woodturnerscatalog.com/store/Turning_Tools___Hollowing_Tools___Hollow_Pro_Hollowing_Tools___Hollow_Pro_Tool___hollo

[Johan Heyns]

Thanks Boet!  I'll make it so that you will have to shim underneath the square shaft to get the cutter exactly to the center of the workpiece. 

[Canuck]

Here's a pic from the workshop of 'The Pelikans' of their 'sphere turning jig'   Thanks 'Cubefan'

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