Forum: General - MM Build
Fri 22 August 2014, 11:49
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Replies: 7
Views: 16,950
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Forum: General - MM Build
Thu 21 August 2014, 19:54
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Replies: 7
Views: 16,950
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Forum: General - MM Build
Thu 21 August 2014, 15:01
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Replies: 7
Views: 16,950
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Forum: 55. Dust Management
Wed 29 February 2012, 21:36
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Replies: 18
Views: 28,279
check out...
check out http://www.floweringelbow.co.uk/2011/dust-extraction/dust-sniper-vid/ which includes a pair of Bill Pentz mini cyclones powered by a double boxed & bafffled shop vac style vacuum all on...
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Forum: Miscellaneous / General / Whatever / Catchall
Fri 05 August 2011, 12:22
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Replies: 8
Views: 9,854
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Forum: MechMates already cutting
Sun 12 June 2011, 01:31
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Replies: 1,586
Views: 1,030,387
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Forum: MechMates already cutting
Sat 28 May 2011, 23:04
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Replies: 66
Views: 44,880
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Forum: MechMates already cutting
Sat 28 May 2011, 15:30
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Replies: 66
Views: 44,880
to put a number to Geralds' succinct and...
to put a number to Geralds' succinct and intuitive drawing . . .
using http://en.wikipedia.org/wiki/Circular_segment as the basis of the math . . .
r = cutter radius
inset = d =...
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Forum: Miscellaneous / General / Whatever / Catchall
Fri 29 April 2011, 10:51
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Replies: 31
Views: 24,175
there are archeological tools that are useful...
there are archeological tools that are useful when sites do disappear
eg. the "wayback machine" (http://replay.web.archive.org/20100516124834/http://mechmate.com/)
it won't get everything but...
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Forum: Miscellaneous / General / Whatever / Catchall
Fri 22 April 2011, 12:11
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Replies: 31
Views: 24,175
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Forum: MechMates already cutting
Tue 19 April 2011, 16:14
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Replies: 174
Views: 171,976
is this the course:...
is this the course: http://ocw.mit.edu/courses/architecture/4-510-digital-design-fabrication-fall-2008/ ?
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Forum: Profiled (laser cut) & bent steel plate
Tue 30 November 2010, 18:52
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Replies: 4
Views: 14,186
according to the video comment, "3mm old steel...
according to the video comment, "3mm old steel with 4mm carbide bit"
seems to produce a slurry (for lack of a better word) rather than chips
i'm curious also about the feed rate and type of bit...
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Forum: Construction started, but not cutting yet
Fri 22 October 2010, 14:14
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Replies: 35
Views: 52,281
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Forum: MechMates already cutting
Mon 18 October 2010, 15:21
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Replies: 137
Views: 113,183
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Forum: Miscellaneous / General / Whatever / Catchall
Wed 01 September 2010, 01:41
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Replies: 22
Views: 16,500
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Forum: Archives
Fri 30 April 2010, 07:52
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Replies: 14
Views: 21,234
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Forum: MechMates already cutting
Mon 26 April 2010, 19:16
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Replies: 1,586
Views: 1,030,387
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Forum: Cutting various materials - bit selection, feeds, speeds
Sun 21 March 2010, 23:48
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Replies: 8
Views: 14,723
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Forum: Cutting various materials - bit selection, feeds, speeds
Sun 21 March 2010, 14:51
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Replies: 8
Views: 14,723
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Forum: Cutting various materials - bit selection, feeds, speeds
Sun 21 March 2010, 14:21
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Replies: 24
Views: 28,756
Normand,
you are quite right :)
sometimes i...
Normand,
you are quite right :)
sometimes i forget there is a bigger picture to look at :o
(and always trade offs)
i've learned to keep my depth of cut <= to the bit diameter which seems to...
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Forum: Cutting various materials - bit selection, feeds, speeds
Sat 20 March 2010, 01:05
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Replies: 24
Views: 28,756
Yes, a straight bit should have less (but...
Yes, a straight bit should have less (but possibly some) tear out
The cutting force is in the direction that the cutting edge is moving
Imagine cutting a slice of bread from the bottom up :eek:...
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Forum: Cutting various materials - bit selection, feeds, speeds
Fri 19 March 2010, 15:06
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Replies: 24
Views: 28,756
That looks like tear out . . . which would be...
That looks like tear out . . . which would be explained by the spiral upcut bit pictured . . . as the cutting edge is leaving the wood it will tend to tear
a spiral downcut will cut in to the...
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Forum: 701. Motor Drives
Wed 10 March 2010, 09:04
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Replies: 15
Views: 17,604
Just last evening i was comparing (but no...
Just last evening i was comparing (but no conclusions yet) the 34HS8801 (425 oz-in) and the 34HS6801 (at approx 300 oz-in) in the context of a 4:1 belt reduction using a G540
cheers,
robin
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Forum: 701. Motor Drives
Wed 10 March 2010, 08:22
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Replies: 15
Views: 17,604
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