Author Topic: What do you see in this photo? (Read 1284 times)

Cut4fun . · « **Reply #20 on:** January 10, 2019, 01:43:48 pm »

Nothing to be sorry about. Old pics are great.

The younger gen has everything on puters phones etc. Where will those pics be 30-50 years from now.

I love seeing the ones my mom has way back. My hard copy pics go up to the mid 90's or so before I started saving on puters etc. Lost a bunch that way.

trappermike · « **Reply #21 on:** January 11, 2019, 07:31:25 pm »

I just found the original side-view photo,it's not good either. Bummer.

I still haven't heard anyone guess or explain how I got the whole crank assembly to be so light,less than a stocker?

trappermike · « **Reply #22 on:** February 27, 2019, 04:10:20 pm »

The crank counterweights are built of the strongest grade of titanium,that's why my full circle cranks weighed less than stock. It is tougher than steel to machine and had a fire on the lathe once,the cutting bit gets hotter and duller faster cutting titanium.
The counterbalance holes are also plugged(stuffed),but I used lighter magnesium instead of aluminum.
I actually found the magnesium harder to obtain than the titanium,I still have some of them left...
The shafts were made of 4340 stress-relieved steel. (The strongest steel for that app.)

HolmenTree · « **Reply #23 on:** February 28, 2019, 09:31:26 am »

Mike you went in deep with that circle crank build, I'm not a machinist by sorts but your understanding of different alloys is great thing.

I have a question for you, I'm in the middle of a hotsaw rebuild with a second one in the near future.
I want to replace the aluminum plates I used in the past with magnesium plate. Magnesium is a 1/3 lighter then aluminum and much stronger.
I found a good source that will sell just one piece from .05 mm thick up to 20mm thick (13/16") as small as 4"×4" up to 10"×20" and bigger.
Two grades available: AZ31B and AZ91 D magnesium alloy plate.
How easy is this stuff to work with, welding and milling?

trappermike · « **Reply #24 on:** March 01, 2019, 11:32:53 am »

Of all metals,on the machinability scale magnesium ranks #1,it is the nicest metal of all to machine,very easy. Welding methods are similar to aluminum,but you need magnesium rod of course.

HolmenTree · « **Reply #25 on:** March 01, 2019, 01:54:29 pm »

Quote from: trappermike on March 01, 2019, 11:32:53 am

Of all metals,on the machinability scale magnesium ranks #1,it is the nicest metal of all to machine,very easy. Welding methods are similar to aluminum,but you need magnesium rod of course.

Thanks Mike, that's what I figured.
They say this magnesium plate coming out of China today is the best kept secret for the manufacturing industry.

trappermike · « **Reply #26 on:** March 01, 2019, 02:34:25 pm »

I got my titanium from Vancouver and the magnesium from California.

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Author Topic: What do you see in this photo? (Read 1284 times)

Cut4fun .

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HolmenTree

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