I am using this site as a reference for making some telescope eyepieces: http://home.fuse.net/astronomy/
Larry chose to use urethane to make the blanks for machining. My experience with urethane is that recipes range from rubbery soft to pretty darn hard, but not fully hard. I need something that can take a .6 mm pitch thread and stand up to assembly cycles. PVC pipe is the wrong color, threads okay, but the threads smear easily. Acetal works very well, but can't be bonded or painted. Polyester resin might work. I'm also considering injection molding blanks from PLA. I'm wondering, are there forms of urethane that have the same characteristics as acetal? Are there other materials that would be better? -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=190641631&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
