--- In GrizHFMinimill@yahoogroups.com, "a3sigma" <dcclark111@...> wrote:
>
> Good morning group,
>
> I've posted a pdf on the subject.
>
> http://groups.yahoo.com/group/GrizHFMinimill/files/D.C.%20Clark%20stuff/
>
> These mods seem to me to make a significant difference. The Y axis now feels smooth and consistent throughout it's range, and backlash an acceptable 0.005 inches. There's no endplay that I can detect.
>
> The thrust washers were made of PTFE Delrin from McMaster.com part number 8579K28. I also coated them with PTFE grease.
>
> Since it takes very little more time or effort to make several washers, it seemed a waste of time to make just one of each. Hence, I have several pairs. It anyone would like to try this mod, and lacks a lathe to make their own, contact me off list and I'll mail you a set. You'll be doing me a favor as well, since I'd like to get some other opinions on whether this really makes a difference. "Feel" of a machine is pretty subjective, and I am always wary of confirmation bias.
>
> Best regards,
>
> David Clark in Southern Maryland, USA
>
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