Avoneer
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| posted on 6/3/05 at 08:35 PM |
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Hacksaw blade TPI
Would 18 TPI be ok for cutting the chassis or too harsh?
Cheers,
Pat...
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gazza285
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| posted on 6/3/05 at 08:56 PM |
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Hard going through thin wall. It'll cut quick, but you'll struggle to keep the line. Use 32tpi, more effort but better cuts. I use a
variety of angle grinders myself, both 4.5 and 9 inch, lot easier on the forearms.
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Avoneer
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| posted on 6/3/05 at 09:03 PM |
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Thanks - will look get some 32's and 24's.
(But think of the benefits of strong forearms!).
Cheers,
Pat...
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clbarclay
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| posted on 6/3/05 at 09:19 PM |
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24 tpi are common (can be found most places like 18) and seem to vety work well on 16 swg from my past experiance.
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gazza285
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| posted on 6/3/05 at 09:24 PM |
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quote:
But think of the benefits of strong forearms!).
"Strong in the arm and thick in the head" as I get told at work.
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Mark Allanson
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| posted on 6/3/05 at 09:25 PM |
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I used multitooth ones, the teeth vary from 18 to 28 over every inch, they seem to stay sharp for ages and you can use them on almost anything
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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David Jenkins
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| posted on 6/3/05 at 09:41 PM |
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The usual rule of thumb is at least 2 teeth in the piece at any time, so for 1.6mm (1/16" ) you'll need 32 tpi.
David
[Edited on 6/3/05 by David Jenkins]
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clbarclay
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| posted on 6/3/05 at 09:55 PM |
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quote:
Originally posted by David Jenkins
The usual rule of thumb is at least 2 teeth in the piece at any time, so for 1.6mm (1/16" ) you'll need 32 tpi.
David
Yes, but thats only if you cut perpedicular to the steel. If you cut at an angle then the thickness of the steel beig cut by the blade at any one time
will increase.
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David Jenkins
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| posted on 7/3/05 at 08:49 AM |
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...I left out the "preferably 3 teeth" bit of the recommendation! Even at an angle, you'll only get 2 teeth in the work on 1.6mm
stock.
David
(just watch some anorak get his pythagoras theorum out just to prove that I could be wrong in 9.3786 times out of 100...  )
[Edited on 7/3/05 by David Jenkins]
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Hellfire
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| posted on 7/3/05 at 09:32 AM |
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Dave - you just know it's coming... 
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David Jenkins
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| posted on 7/3/05 at 10:03 AM |
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Oh yes...
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Danozeman
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| posted on 7/3/05 at 02:45 PM |
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I use 24 tpi.. Work well i find. Worth getting good quality blades though.
Dan
Built the purple peril!! Let the modifications begin!!
http://www.eastangliankitcars.co.uk
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Liam
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| posted on 7/3/05 at 03:54 PM |
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I tend to prefer a nice coarse 18 which rips through the stuff really quick. A bit of tweaking on the bench grinder is sometimes needed afterwards
but this is less painful than spending twice as long cutting in the first place for accuracy (only to find you still need to take it to the bench
grinder!).
Liam
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clbarclay
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| posted on 7/3/05 at 07:26 PM |
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The good thing about finer blades is that there are more teeth to break off the blade before its unuseable, whalst you learn to handle a hack saw.
By the way 10 tpi and a hydaulic damper to control the blade, I think a bandsaw is on the wish list, 16g stands no chance.
Also a lot easier to cut square or mitre accurately
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