PR mold

[dozuki]

I have turned one or two PR pens fusing the square molds and that works o.k/
I was wondering if anyone had any ideas for round molds that would require less shaping. Also should the cut produce castings that are like sand?

 

[GaWoodworker]

Here is a link that tells how to make a conduit mold:
http://www.sydneywoodturners.com.au/site/articles/designs/pens/pens.html

There is a better mold plan that uses copper tubing but I was not able to find that page.

 

[myname1960]

GaWoodworker

Were you referring to the mold plans called "The Perfect Mold" which used copper tubing?

If it was the picture and plans of sort are at this link:

http://turtlewoodworks.com/pmggallery/osbornekgal1.htm

Chris

 

[alamocdc]

Myself, JimGo, YoYoSpin and others are using ice cube trays for bottles from WallyWorld. They cost about $4 and the cylinders they cast are 3/4" in dia.

 

[JimGo]

This is what the trays look like if you're interested:



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[dfurlano]

I didn't like the length of the tubes (not quite long enough for one whole pen) so I cut the bottoms of the tray off on my band saw so they are now the length of one blank. The top still fit after I cut it off.

 

[mick]

I just mark the length of half a blank on my ice trays with a sharpie and pour away. After a few dozen you get a feel for the right amount...lol Very little waste this way!

 

[JimGo]

I wonder if you couldn't stack two of them together (or cut the one tray in half and stack the halves) to make longer blanks.

 

[DWK5150]

Jim,

Why dont you just use PVC pipe if you want longer molds thats what I do. You can by a cople foot piece of pipe for a couple bucks put a cap on one end and off you go.