3D printed projects
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Rjag (07-14-2020)
08-17-2019, 12:53 PM
#5
What kind of towed gun is that?
I've been looking at doing a USA WW2 Pack 75.
I've been looking at doing a USA WW2 Pack 75.
08-17-2019, 01:03 PM
#7
Nice! Is the gun carriage 3d printed? I can see that the wheels are.
08-17-2019, 01:19 PM
#11
Oh yes please!
08-17-2019, 01:33 PM
#14
I'm off all next week, so I'm hoping to make a savage inroad into the Brockway pontoon carrier now that the White 666 is about finished.
After that's out of the way with, we'll have to talk about divying up the M19...
After that's out of the way with, we'll have to talk about divying up the M19...
08-17-2019, 01:37 PM
#15
It looks like it has a bunch of fun challenges for my CAD skill...
08-18-2019, 01:23 AM
#19
Properly flexible filaments are hard to do with the bowden printers, as you are essentially trying to push a wet noodle down a drinking straw and you struggle to get enough force at the hot end to drive the material thru and flow properly.
I have a direct drive printer which I've set up specifically to use TPU - that gets around the feed problem, but the other down side is the print speed is still low. The realy soft (80 shore hardness) material I started with could only print at around 15mm/second, which translates to a single tyre for a CCKW taking 8 hours.
I've since moved on to another brand, which is harder at 85 Shore but that allowed me to crank the speed up to 25mm/sec and get that tyre done in around 5 hours. Its also a about a quarter of the cost of the really soft material as well.
I have a direct drive printer which I've set up specifically to use TPU - that gets around the feed problem, but the other down side is the print speed is still low. The realy soft (80 shore hardness) material I started with could only print at around 15mm/second, which translates to a single tyre for a CCKW taking 8 hours.
I've since moved on to another brand, which is harder at 85 Shore but that allowed me to crank the speed up to 25mm/sec and get that tyre done in around 5 hours. Its also a about a quarter of the cost of the really soft material as well.
08-21-2019, 10:46 PM
#22
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I’ve also been playing with doing an early 75mm Sherman mantlet with a 3mm IR bulb where the mg should be...still need to test what sort of range it’s giving me....
08-22-2019, 12:06 AM
#23
Based on testing with DBC's back in the day, you should expect 60-70ft. The bigger question is how long will the 3mm LED last - Phil did a lot of experimentation with the limiting resistor on the DBC to stretch the LED that far without blowing it on a regular basis. How long the LED lasts with another board, which assumes a 5mm LED with a higher tolerance for current spikes, is going to be an interesting question...
08-23-2019, 02:58 PM
#24
Nice Mantlet!!!
