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Guess what this is...
Posted: Wed Jan 14, 2015 10:24 pm
by Ovenpaa
These lumps turned up today, the larger is 5"x10" (125,0mm x 25,0mm) coffee cup alongside for scale. First job was to lop 40,0mm off one end as the section is to be used for a separate job. The smaller piece will need cutting into two equal sized lengths although only one will be used.
So first question, how long did it take to cut the end off the larger diameter piece using my horizontal band saw with a slightly tired blade with a very leisurely cut rate, second question, what am I making?
Re: Guess what this is...
Posted: Wed Jan 14, 2015 10:41 pm
by 1066
Piston for a JAP speedway bike.
Re: Guess what this is...
Posted: Wed Jan 14, 2015 10:46 pm
by 1066
Hmm! 8 mins for the cutting and a cylinder and piston for a small air-cooled engine.
Re: Guess what this is...
Posted: Wed Jan 14, 2015 10:49 pm
by bigfathairybiker
Metal Coffee Cup from the smaller bit.
Coffee flask from the larger bit.
Mark
Re: Guess what this is...
Posted: Thu Jan 15, 2015 8:49 am
by Blackstuff
I'm pretty confident you're making a trigger pin for an AR-15
Re: Guess what this is...
Posted: Thu Jan 15, 2015 8:52 am
by Ovenpaa
Not motorbike related and it took a lot longer than 10 minutes...
Re: Guess what this is...
Posted: Thu Jan 15, 2015 8:54 am
by Mike A
12 Minutes & mostly swarf.
Re: Guess what this is...
Posted: Thu Jan 15, 2015 8:58 am
by Ovenpaa
Mostly swarf is about right, the larger section will be reduced to just over half the weight. I did calculate the before and after weights prior to ordering it however I have not stuck it on the scales yet to confirm.
Re: Guess what this is...
Posted: Thu Jan 15, 2015 8:58 am
by Christel
Mike A wrote:12 Minutes & mostly swarf.
You must have seen our workshop
Re: Guess what this is...
Posted: Thu Jan 15, 2015 9:16 am
by Mike A
Not had the pleasure of the shooting shed yet, I have bumped into David at Barton Road once.
But seriously ...a moderator?