Because I wanted the inter-jaw webbing to be as thin as possible I knew I'd need to extend the webbing into the throat of the chuck to get a better beam. No problem there and it has the added benefit that it sure makes it align beautifully when installing it quickly.
Here's the thinnest metal version first. It really performs fabulously and is as rigid as I had hoped. there's a small amount of clearance around the chuck jaws so the spider has almost no place to move. I made this one without magnets and it doesn't seem to need them. It was a simple matter to take a light clean up pass on the front of the spider to remove the low profile casting texture. I left it on the rest of the part.
|Metal chuck spider for sherline chuck|
|Rapid prototyped metal chuck spider for Sherline 3 jaw chuck|
|Rear of chuck spider showing deep center for rigidity|
|Installing metal chuck spider on sherline chuck|
|Mowrer chuck spider in use on Sherline chuck|
|Plastic printed chuck spider for Sherline 3 jaw chuck|
|Installing plastic printed chuck spider on Sherline Chuck|
|Back of plastic printed chuck spider|
|Plastic printed chuck spider in place on Sherline 3 jaw chuck|