On Fri, 2012-08-24 at 08:12 +0200, Jan de Kruyf wrote: > > I have never seen such a material on this side of the pond, Jan. Where > > does one get it? > > > > DuPont makes it if I am not mistaken. It is used to make bearing bushes for > valves and the like. > The price is not quite up to Moglice standards. But $100 is also quickly > paid for that stuff. > > I forget what the etching liquid is, but it is quite aggressive and very > nasty (only for use in 3rd world :) > The supplier always makes me wait a few days "for the weather to get right > for etching". > > In any case I see you are of the generation of "the wooden ships and the > iron men" > I learned my trade on the iron ships, see. > > cheers, > > j. > > > > > > (with an etched > > > surface, otherwise the glue does not hold) onto the running surface of a > > > taper gib. > > > > Etched with what acid?
Found this on the web. 40g water 25g potassium dichromate 500g concentrated sulfuric acid A note of caution: as usual add the sulfuric to the water, slowly with stirring and cooling. This etches the delrin ..... so epoxy has a chance of adhesion. I think I'd test before I did a real piece. As for a moglice work-alike I think I'd try a slow-curing epoxy loaded with moly disulfide. Mix the epoxy by weight to get the proportions correct. (kitchen digital scale :-)) Dave With Cr the problem is alway disposal, at least it is not Cr(VI). > > > > > Like 2mm thick or so. The stuff scrapes readily with the back > > > of a stanley knife, quite quick. Blue, scrape, blue, scrape etc. until > > > you are satisfied that it fits perfectly. Presumably you could do the > > > same trick on the back after machining it down a bit. > > > > > > the glue to use is slow curing epoxy of a good quality. And use your > > > machine table as a perfectly flat suface to clamp it on while curing. > > > The results are always just magic. Even on expensive CNCmachines. > > > > Sounds almost self fitting. :) > > > > > Jan. > > > > Thanks Jan. There are usually many different ways to approach that. I > > thought of Moglice too, but I hear that stuff is about $100 USD/ounce. Too > > rich for my blood. > > > > Cheers, Gene > > -- > > "There are four boxes to be used in defense of liberty: > > soap, ballot, jury, and ammo. Please use in that order." > > -Ed Howdershelt (Author) > > My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! > > "There was a boy called Eustace Clarence Scrubb, and he almost deserved > > it." > > -- C. S. Lewis, "The Chronicles of Narnia" > > > > > > ------------------------------------------------------------------------------ > > Live Security Virtual Conference > > Exclusive live event will cover all the ways today's security and > > threat landscape has changed and how IT managers can respond. Discussions > > will include endpoint security, mobile security and the latest in malware > > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
