> Date: Tue, 28 Mar 2017 18:17:31 +0100 > From: andy pugh <bodge...@gmail.com> > Subject: Re: [Emc-users] 3D Printers
> > On 28 March 2017 at 17:18, Les Newell <les.new...@fastmail.co.uk> wrote: > > The prints also aren't that strong. If you > > put enough time into it you can get some good results but most of the > > stuff I want to make either needs to be strong or dimensionally accurate > > (or usually both together). > > My intended application is making foundry patterns, to be cast in iron or > brass. > > It is an alternative to having my milling machine churning away on > stacks of MDF for hours on end. > http://bodgesoc.blogspot.co.uk/search/label/Holbrook03%20Pattern%20Making > > -- > atp The eBay shop description went on about their tech, which they are proud of. The bed leveling: 1. I suggest starting a print off real slow. The head has no sensors on it, so it does not know when it has ruined a part. 2. Put down an extra thick “basement” under your part. Instant (cheap + consistent) level! (Other people will have different guidance around finicky starting glitches). Form creation. Like lost wax? Low temperature plastics have been burnt out of molds before. If you need more precision in dimensions, you could mill the plastic down. I am sure you remember being told about the material specific rulers that mold makers have. Once you have the plastic form, for a high value part, you could do a test mold out of plaster, - If you have good parting lines on the plastic form - , and see if a (plastic / plaster) cast, using the temporary plaster mold, has the appropriate result. Looks: I suspect all glossy prints have had the edges, (where the Z increased in height), smoothed out. Acetone, (flammable), to melt the plastic, in a coffee can plus heat = be cautious. Yet instructions and videos are on the web. James Isaac. ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
