Rabbitz wrote: ↑Fri Jul 20, 2018 6:51 am
I still don't understand how a bit of layered plastic can contain the interior ballistics of even a .22LR cartridge - given that most 3D printed stuff is relatively fragile and that by design the material melts at reasonably low temperatures.
A question for those who have abilities in these things, I would imagine that CNC type lathes and mills will have become more affordable. Are there light duty or hobby versions or are they still stupidly expensive?
You are right on the polymer based stuff, it's pretty hard to make anything workable for a firearm BUT...
Now that 3D metal printing is starting to drop in price you'll probably see that bleed into the home market (1-3 years my guess) at which points things change slightly. How much risk does that pose....not much when you can readily get access to traditional tools and equipment now.
The Raven wrote: ↑Fri Jul 20, 2018 8:13 am
How much risk does that pose....not much when you can readily get access to traditional tools and equipment now.
This is what I was driving at.
Operating CNC metal working set up is not that far removed from operating a 3D printer and I am sure that the technolgy is making it simpler all the time. I haven't seen it but I would guess that feeding a 3D model into a CNC set up is possible.
But in the same breath "Man uses lathe and mill to build gun" doesn't get as many clicks as "Man 3D prints gun - we are all going to die".
Rabbitz wrote: ↑Fri Jul 20, 2018 6:51 am
I still don't understand how a bit of layered plastic can contain the interior ballistics of even a .22LR cartridge - given that most 3D printed stuff is relatively fragile and that by design the material melts at reasonably low temperatures.
A question for those who have abilities in these things, I would imagine that CNC type lathes and mills will have become more affordable. Are there light duty or hobby versions or are they still stupidly expensive?
You are right on the polymer based stuff, it's pretty hard to make anything workable for a firearm BUT...
Now that 3D metal printing is starting to drop in price you'll probably see that bleed into the home market (1-3 years my guess) at which points things change slightly. How much risk does that pose....not much when you can readily get access to traditional tools and equipment now.
Since when is $200,000 a reality for the home market? Oh, and don’t forget the sintering oven that is a necessity.
The Raven wrote: ↑Fri Jul 20, 2018 8:13 am
How much risk does that pose....not much when you can readily get access to traditional tools and equipment now.
This is what I was driving at.
Operating CNC metal working set up is not that far removed from operating a 3D printer and I am sure that the technolgy is making it simpler all the time. I haven't seen it but I would guess that feeding a 3D model into a CNC set up is possible.
They are light years apart. No offence towards Bruce or James but layering molten plastic is a piece of piss compared to a cnc lathe or machining centre. Let alone the tooling and years of acquired knowledge as to how to get the best out of it.
An error in programming a 3D printer will result in a few dags or at worst a lost model. Do that in a cnc and you can kiss the workpiece and tool, workpiece holding device, machine drive and axis controls goodbye in a few seconds.
Rabbitz wrote: ↑Fri Jul 20, 2018 6:51 am
I still don't understand how a bit of layered plastic can contain the interior ballistics of even a .22LR cartridge - given that most 3D printed stuff is relatively fragile and that by design the material melts at reasonably low temperatures.
A question for those who have abilities in these things, I would imagine that CNC type lathes and mills will have become more affordable. Are there light duty or hobby versions or are they still stupidly expensive?
You are right on the polymer based stuff, it's pretty hard to make anything workable for a firearm BUT...
Now that 3D metal printing is starting to drop in price you'll probably see that bleed into the home market (1-3 years my guess) at which points things change slightly. How much risk does that pose....not much when you can readily get access to traditional tools and equipment now.
Since when is $200,000 a reality for the home market? Oh, and don’t forget the sintering oven that is a necessity.
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The crims will find a way to afford it, unlike us innocent law abiding citizens.
Still going well with the 3D printing.
Had to turn 200 cases for the 20VT using a K&M neck turner. Did the job and thought there had to be a better way of holding it. Looked on line and found K&M have a holder about $50.
A bit of measuring and CAD work and printed this.
K&M Neck turner holder
20181008_172953a.jpg (55.21 KiB) Viewed 2378 times
20181008_173004a.jpg (55.19 KiB) Viewed 2378 times
Needed a bit of a sand to clean up curves but fitted nicely. Can also put a screw through to lock it on.
20181008_174532a.jpg (64.18 KiB) Viewed 2378 times
Now have a nicely improved neck turner and no cases to turn.
kickinback wrote: ↑Sun Nov 11, 2018 8:24 pm
Very nice Bruce.
But
Use a bloody drill will you please.
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It works Do I qualify as a member of RAFP.
Bruce
I ran this before the membership committee last night, and while the whole committee agreed that you qualify on some aspects, namely just get stuck in and have a go, don't give a shit about what others say, it was moved and passed that you do not quite fit into the criteria required. Sorry to say, but your finished projects are just too fucken neat and tidy.
