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Thread: the possessed meatsafe!!
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27th October 2007, 01:45 AM #16SENIOR MEMBER
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27th October 2007 01:45 AM # ADSGoogle Adsense Advertisement
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27th October 2007, 04:51 PM #17
If you want to know what friction is, try drilling through hardened steel.
If the bit is grabbing or too aggressive, lower the relief angle of the cutting edge.....and hold your drill straight.
Obviously I haven't.
The large showcase display units I have been building from old recycled Ironbark for the last month must actually have been Radiata Pine that had been professionally stained and hardened by someone who really knows what they are doing, because I had no problem nailing it, drilling or machining it.
This is a picture of me gobsmacked by how easy it was.....I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.
Albert Einstein
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27th October 2007, 05:01 PM #18Stupidity kills. Absolute stupidity kills absolutely.
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27th October 2007, 05:11 PM #19I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.
Albert Einstein
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27th October 2007, 05:18 PM #20
You could tell us how you really feel, what was denigrating
Voila............what am I replying to? post has vanished
Hardened steel is a breeze compare to *ooooold ironbark*, just because you did some well seasoned ironbark recently is no call for your idiotic reply, again, try finding some really old stuff before denegrating others.
You really don't want to get into a p*****g contest about drilling or drilling hard materials.Last edited by Iain; 27th October 2007 at 05:24 PM. Reason: tpyo
Stupidity kills. Absolute stupidity kills absolutely.
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27th October 2007, 09:21 PM #21
Nobody mentioned the correct speed for the bit, why was that? To be able to clear the bit and avoid heat, therefore bluntness, you need the correct speed.
To cut really hard woods, should the angle of the bit change to more closely resemble steel cutting bits?
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28th October 2007, 02:36 PM #22Happy Feet
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thanks guys
Next time i will
1 reduce speed of drill
2 make sure i have a good drill bit. was using the ones supplied with dremel
3 insert steel screw first and wax the screw
dont know what to do about the bent nails.
in the end I pegged the top on
astrid
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28th October 2007, 03:22 PM #23
Astrid, you may need to increase the speed, not decrease it. If the waste is not being ejected from the flutes by centrifugal force then it is probably too slow. The smaller the bit, the faster the revs required.
Look at this chart.
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28th October 2007, 03:32 PM #24
And another thing to follow on from Groogy's post is you may need to pull the bit out 2 or 3 times before reaching depth to clear the flutes as well
Cheers
DJ
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28th October 2007, 03:38 PM #25I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.
Albert Einstein
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28th October 2007, 04:17 PM #26Happy Feet
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hot db
wont increasing the speed on a fine DB increase friction, thus heat and soften DB thus make more prone to breaking
sorry not being a SM
astrid
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28th October 2007, 04:23 PM #27
Re read 23 & 24, the friction is generated from the build up of crud in the flutes, remove and clean, you will feel it when it stops cutting, and a higher speed will assist in the ejection.
Try a spur point bit too, does a better job than a metal drill and cuts a cleaner hole.Stupidity kills. Absolute stupidity kills absolutely.
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28th October 2007, 04:30 PM #28Happy Feet
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that makes sense
now what the h--- is a spur point bit
astrid
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28th October 2007, 04:35 PM #29
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28th October 2007, 04:54 PM #30Happy Feet
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ahhh those thingys
I call these a spade bit
but do they come 1m ?
astrid