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Last Monday one of my friends came into the post monthly meeting and handed me two spent shells, both 30 mm but that where the similarity ends
He asked me if my 3 D Printer could make some bullets for them. No other information was available. Since these are now going to be paper weights I have full liberty do do as I choose, I decided to model one after a 7.62 (.308) and the other after a .44 magnum. don't ask me why, I just decided that they would look cool.
The .308 obviously is on the left
Next I had to do a little simple math to determine the length of the round based on the 7.62 x 71 mm round I used for the model
I determined that the amount of "bullet should be 100 mm long
Next in fusion I need to create a 2 D model which would be the profile of the bullet. I decided that for ease of printing I would use the x, y plane with the x being the diameter of the bullet and Y the length
first I draw a rectangle that is 1/2 the diameter of the bullet wide (30/2) 15mm an 100 mm high
Next I draw a line along the Y axis that is 21 mm long. This is done to establish a point where the bullet should be seated in the brass.
now I create an ellipse using the point 21 mm from the bottom of the rectangle and the top of the ellipse at the top of the rectangle and the width of the ellipse 30 mm wider.
If you look close you will see the base of the bullet is smaller than the max diameter of the round making a boat tail. This should make seating the bullet in the shell easier.
Now I simply erase everything that does match the profile of a bullet
Next I draw a construction line along the Y axis on the bullet
Now using the revolve function I create a 3 D model from the 2 D profile along the Construction line
I now have the 3 D image of a bullet that is 30 mm x 100 mm
Next I select 3 D print from the file menu
I can preview the part with a preview mesh drawing
Now F 360 opens Cura and sends the part to Cura for printing.
Now I am waiting for a delivery from Amazon so I can run the print.
He asked me if my 3 D Printer could make some bullets for them. No other information was available. Since these are now going to be paper weights I have full liberty do do as I choose, I decided to model one after a 7.62 (.308) and the other after a .44 magnum. don't ask me why, I just decided that they would look cool.
The .308 obviously is on the leftNext I had to do a little simple math to determine the length of the round based on the 7.62 x 71 mm round I used for the model
I determined that the amount of "bullet should be 100 mm long
Next in fusion I need to create a 2 D model which would be the profile of the bullet. I decided that for ease of printing I would use the x, y plane with the x being the diameter of the bullet and Y the length
first I draw a rectangle that is 1/2 the diameter of the bullet wide (30/2) 15mm an 100 mm high
Next I draw a line along the Y axis that is 21 mm long. This is done to establish a point where the bullet should be seated in the brass.
now I create an ellipse using the point 21 mm from the bottom of the rectangle and the top of the ellipse at the top of the rectangle and the width of the ellipse 30 mm wider.
If you look close you will see the base of the bullet is smaller than the max diameter of the round making a boat tail. This should make seating the bullet in the shell easier.
Now I simply erase everything that does match the profile of a bullet
Next I draw a construction line along the Y axis on the bullet
Now using the revolve function I create a 3 D model from the 2 D profile along the Construction line
I now have the 3 D image of a bullet that is 30 mm x 100 mm
Next I select 3 D print from the file menu
I can preview the part with a preview mesh drawing
Now F 360 opens Cura and sends the part to Cura for printing.
Now I am waiting for a delivery from Amazon so I can run the print.
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