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Multifunction 3D printer

Started by franco malgarini, February 14, 2015, 05:08:57 AM

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memoryman

#10
February 16, 2015, 10:08:50 AM
TK, Sherline makes small machines with low accuracy and repeatability.
What I have in mind has more rigidity, absolute scales (I have invented a scale that is low cost bus still has <.001' resolution). Maybe a 10" cube work envelope?

TinselKoala

#11
February 16, 2015, 11:31:29 AM
Quote from: memoryman on February 16, 2015, 10:08:50 AM
TK, Sherline makes small machines with low accuracy and repeatability.
What I have in mind has more rigidity, absolute scales (I have invented a scale that is low cost bus still has <.001' resolution). Maybe a 10" cube work envelope?
Being the proud owner of a complete Sherline miniature machine shop (manual, not CNC) and just about every accessory in their catalog, I beg to differ with you. I can work to tolerances of 0.0001 inch with the Sherline equipment. Of course it needs proper setup and use...  and also it is in storage in another location so I can't demonstrate anything to you except perhaps this video:

http://www.youtube.com/watch?v=5ewRqiKwoXo

Now, I am certain that you could make something that would be "better" and more rigid in a small work cube from scratch, but I also think that a print head for a CNC Sherline mill would work nearly as well for most purposes. Certainly it would be able to achieve 0.001 inch tolerance.

Pirate88179

#12
February 16, 2015, 11:42:43 AM
TK:

That is a nice lathe.  I always hated 4 jaw chucks...very accurate but, it always took me a while to get it zeroed in.  I looked up those machined tools and they are reasonably priced in my opinion.  The cnc options do not cost all that much more it seems.  I checked out their milling machine.  Those bed ways are much more rigid than some rods taken from an ink-jet printer that most use on 3-d printers.

Bill
See the Joule thief Circuit Diagrams, etc. topic here:
http://www.overunity.com/index.php?topic=6942.0;topicseen

memoryman

#13
February 16, 2015, 12:15:30 PM
In no way do I diss the Sherline; they are great machine for cost and size. Maybe money could be made selling a 3D attachment; that just is not my interest.
I visualise a universal cnc machine with extendable X-axis (almost plug'n play) with other features not available in a small desktop machine.  My selling price would start around $4k, so not a low cost machine. I see a gap in the market that is not filled.
I am also very interested in developing a uv resin based 3D printer with unusual features. Lack of resources (read: money) keeps me limited.
Btw, 3 jaw chucks are available for the Sherline of course.
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