Hi all -
I'm suffering sticker shock in getting some material for a project.
I need bar stock, either aluminum or plastic in 3/4" thickness by 3" wide. Perusing the McMaster catalog I'm finding Delrin at about $20 per foot, Polyethylene at about $5 per foot, Polypropylene at about $4.50 a foot, PVC at about $11 per foot and 6061 aluminum at about $20 per foot.
I've prototyped the project on delrin - and it would work for what I have in mind, but is any of the cheaper materials equally good for machinability?
The 'poly' group (PVC, PE, etc) looks like a nice cheap option, but will it gum up when I mill deep, narrow slots through the material? (I'm taking 0.1" pecks in the delrin and getting OK finish)
Any better pricing on similar material, preferably closer to Portland, Oregon?
Thanks in advance,
Science is like sex: sometimes something useful comes out, but that's not why we're doing it. -- Richard Feynman