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Measures of speed

I'm used to the feed speeds my CNC mill runs at when working on steel and aluminum. Today, though, I bought some acrylic sheets to mill images into.

Holy cow.

The term "Like a hot knife through butter" does not do it justice. This was much faster than a hot knife through butter. That end mill bit sliced through that acrylic like air, barely acknowledging its existence.



( 6 comments — Leave a comment )
Feb. 12th, 2006 11:10 am (UTC)
I sent you a .dxf conversion of that image in case you wanted to try that. :)
Feb. 12th, 2006 07:11 pm (UTC)
What brand of mill is that again, and where can I get one? =^.^=

It's moving steadily up the toys-to-buy list, and plastic is just fine for most of the projects I have in mind that would use it.

If you happen to perform tests on lexan (polycarbonate) and ABS, also, please post results!

Feb. 12th, 2006 07:31 pm (UTC)
It's made by Taig:
and can be purchaced at carter tools:

googling for Taig will bring up a few things, and I'm fairly certain there is at least one Taig oriented yahoo group.
Feb. 13th, 2006 04:13 am (UTC)
These people won't ship to Canada, but they list a Canadian distributor near me. I can get what I want for around $1200-$1300 Cdn, and it was a real challenge to avoid clicking that shiny button right now. Thanks for the links.
Feb. 12th, 2006 07:36 pm (UTC)
Indeed, plastics can be cut at stupid fast feed rates, and as I understand it they need it, due to plastic's tendancy to melt if you leave the bit in the same spot for too long.

you might find this page on grinding engraving tools interesting. I have a few questions on why they're ground that way, but it's an interesting read none the less.
( 6 comments — Leave a comment )

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  • 17 Oct 2011, 19:18
    Clever! ^_^
  • 7 Oct 2011, 08:38
    Was each link made from two pieces, or was there fill material inside that you removed? I'm having trouble seeing how to print these in a makerbot-compatible way (though I could just be overlooking…
  • 5 Oct 2011, 22:40
    Nah. It'd just take a dissolvable support material and higher resolution. There are commercial 3d printers out there that can print ball bearing assemblies in one pass, fully assembled.
  • 5 Oct 2011, 18:46
    Nice! ^_^ I was going to be flabbergasted if you were actually able to print it as a unit, but I guess that would take antigravity.
  • 5 Oct 2011, 18:19
    I printed each piece individually and assembled them after some cleanup. I did print four segments at a time, though, unattached, in a 2x2 grid.
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