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Author Topic: bronze GB mortar finished!  (Read 824 times)

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Offline barebower

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bronze GB mortar finished!
« on: February 11, 2009, 07:50:11 AM »
After making my first mortar in stainless steel and because i like shooting golfballs so much i decided to make another one in bronze with an oakwood carriage.
It is made from bronze GT 12 barstock with 4" diameter.
The barrel lenght is 4,5" with again a 3/4"x1" powder chamber,total lenght is 8,5".
The trunnion bar is made from square barstock and ends are rounded on the lathe  to accept the trunnion caps.
I think this is an easy way as you only have to mill a straight slot in the barrel then.
Also last week i made a 'free impression' of a dahlgren in 304 stainless with an overall lenght of 10" and drilled and reamed to 15mm.
As you can see in the photo it is not to scale or anything but this is a nice signal cannon or i can shoot cork balls with it that i found in a hobby shop somewhere.
Thanks to all who post so much information here on the forums,it helped me to make these...

Andy
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Offline barebower

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Re: bronze GB mortar finished!
« Reply #1 on: February 11, 2009, 07:51:41 AM »
some more....
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Offline barebower

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Re: bronze GB mortar finished!
« Reply #2 on: February 11, 2009, 07:53:32 AM »
And one more...
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Offline Artilleryman

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Re: bronze GB mortar finished!
« Reply #3 on: February 11, 2009, 07:56:17 AM »
Very nice!  Excellent workmanship.
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Norm Gibson, 1st SC Vol., ACWSA

Offline Cannoneer

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Re: bronze GB mortar finished!
« Reply #4 on: February 11, 2009, 08:07:08 AM »
barebower, that's a fine looking Coehorn and boat Howitzer, great job. For a layman like me, what is meant by making a "free impression"?
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RIP John. While on vacation July 4th 2013 in northern Wisconsin, he was ATVing with family and pulled ahead of everyone and took off at break-neck speed without a helmet. He lost control.....hit a tree....and the tree won.  He died instantly.

The one thing that you can almost always rely on research leading to, is more research.

Offline EL Caz 66

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Re: bronze GB mortar finished!
« Reply #5 on: February 11, 2009, 08:20:27 AM »
BBower,  Very Nice work!!
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Offline dan610324

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  • bronze cannons and copper stills ;-))
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Re: bronze GB mortar finished!
« Reply #6 on: February 11, 2009, 08:39:37 AM »
yeah those are really nice
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Dan Pettersson
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interested in early bronze guns

better safe than sorry

Offline barebower

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Re: bronze GB mortar finished!
« Reply #7 on: February 11, 2009, 09:08:49 AM »
With 'free impression' i mean that i forgot the plans i looked at the day before so i made the barrel as i thought it was and then i came to the idea of the foot mounted on the ertalon board.
This is just a mix of different things i have seen here on the board.....but i think it turned out nice.

Andy
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Offline barebower

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Re: bronze GB mortar finished!
« Reply #8 on: February 11, 2009, 09:10:27 AM »
In case some of you did not see the first mortar in stainless steel i will post a pic of that one too....
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Offline Cannoneer

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Re: bronze GB mortar finished!
« Reply #9 on: February 11, 2009, 09:55:02 AM »
Quote from: barebower on February 11, 2009, 09:08:49 AM
With 'free impression' i mean that i forgot the plans i looked at the day before so i made the barrel as i thought it was and then i came to the idea of the foot mounted on the ertalon board.
This is just a mix of different things i have seen here on the board.....but i think it turned out nice.

Andy

OK Andy, I thought it was some kind of machinist term; don't mind me, I'm off with some kind of flu and I'm feeling a little foggy, thanks. By the way, I concur, I also think it turned out very nice.
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RIP John. While on vacation July 4th 2013 in northern Wisconsin, he was ATVing with family and pulled ahead of everyone and took off at break-neck speed without a helmet. He lost control.....hit a tree....and the tree won.  He died instantly.

The one thing that you can almost always rely on research leading to, is more research.

Offline Terry C.

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Re: bronze GB mortar finished!
« Reply #10 on: February 11, 2009, 10:05:08 AM »
Excellent!!!

 ;D ;D ;D
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Offline Cat Whisperer

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Re: bronze GB mortar finished!
« Reply #11 on: February 11, 2009, 12:15:58 PM »
Andy -

Great collection!

Thanks for posting the pix.  Do you get out often to exercise the herd?

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Offline barebower

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Re: bronze GB mortar finished!
« Reply #12 on: February 12, 2009, 04:41:50 AM »
My son and i shoot golfballs almost any weekend,sooooooooo much fun at short ranges.....last weekend we tried to shoot into a bucket at 40 meters and now and then we get one in.
The charge (25 grains ffg) weighted with an electronic scale,no wadding and ignited with 3mm visco fuse,cleaning with a dry brush every shot.


Andy
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Offline Ex 49'er

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Re: bronze GB mortar finished!
« Reply #13 on: February 12, 2009, 05:29:30 AM »
Beautiful work. I really like the machining of the trunnions. You should post pics of the mortar & the boat howitzer in the calendar section.
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Offline Terry C.

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Re: bronze GB mortar finished!
« Reply #14 on: February 12, 2009, 09:52:10 AM »
Quote from: barebower on February 12, 2009, 04:41:50 AM
.....last weekend we tried to shoot into a bucket at 40 meters and now and then we get one in.

Won't be long now (when everyone finishes thawing out), it'll be time for another round of BINGO!
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Offline dominick

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Re: bronze GB mortar finished!
« Reply #15 on: February 12, 2009, 03:18:31 PM »
Very nice!
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