On 9/21/19 8:30 PM, John Dammeyer wrote:
Hi Andy,
Very cool. Thanks for the info. Any particular brand or do you just buy bulk
from China?
endmill for most of the cuts. We just can't push the 1/8" ones very
hard. Higher quality endmills might help too, but each year we have new
students and numerous broken endmils :) That comes with the territory.
It's not only students who break 1/8" end mills...
John
John,
We have used HQ Master in the past. They seemed OK.
I just ordered these from China. I wanted a short flute length for
cutting aluminum sheet.
https://www.ebay.com/itm/10PCS-%C3%98-3-175mm-1-8-inch-cut-8MM-single-1-Flute-Carbide-End-Mill-carving-acrylic/283456877174?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649
Most of the time 1/8" is the smallest we need. Order some 2mm just in
case. These get stashed away so the students don't inadvertently cut the
part the wrong size.
https://www.ebay.com/itm/HQMaster-CNC-Router-Bits-1-8-Inch-Shank-10-Pack-End-Mill-Spiral-Router-Bit/401831743859?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649
Got these for thicker material. Mainly acrylic and HDPE sheet.
https://www.ebay.com/itm/HQMaster-1-8-3-175mm-Shank-Dia-Single-Edged-1-Flute-End-Mill-CNC-Cutter-Spiral/401849120071?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649
I've been the killer of many a end mill. I've kicked myself as I watch a
brand new end mill plunge at too high a feed rate and shatter. Name a
mistake and I've probably made it. The only time I get frustrated with
the students is when they brake one (or more) and don't tell a mentor
about it. We loose the chance to talk through the mistake.
The end mill are a not that expensive. That is, until its just before a
competition and you run out!
Andy
Andy
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