|
Gunsmithing & How To Pro, Amateur & WECSOG and Tutorials, Guides & OLL Build Instructions |
|
Thread Tools | Display Modes |
#1
|
||||
|
||||
GunMold.com an AR-15 Receiver Mold for casting polymer lowers?
Got this picture from their website http://www.gunmold.com it was sent to me on instagram. It Looks pretty interesting. A mold to cast complete lowers out of a polymer resin? Got my attention because so far my polymer 80% lowers and complete lowers have held up and work perfectly so I'm willing to try this if the price is right. Its called "Armold" lol Doesn't this remind you of the 3-D printer AR15 lowers? |
#3
|
||||
|
||||
Quote:
"Thank you for contacting us regarding "What about all the internal spacer blocks, will they be included as well for $160?". |
#4
|
|||
|
|||
Quote:
|
#6
|
||||
|
||||
Good point but then again I have ordered things from just drawings & 3D designs like those polymer 80% lowers. I would like to see the pictures tho. I emailed them just now to get some pictures lets see how they respond.
|
#7
|
|||
|
|||
Gotta find out, if there's any metal in it, or if it can be molded into the receiver. There's still that stupid law about "undetectable" firearms. And even though you'll have a bunch of metal parts in it later, a receiver IS a firearm.
__________________
DiaHero Foundation - helping people manage diabetes. Sending diabetes supplies to Ukraine now, any help is appreciated. DDR AK furniture and Norinco M14 parts kit: https://www.calguns.net/calgunforum/....php?t=1756292 |
#8
|
|||
|
|||
Quote:
All you have to do is had a half once of barium sulfate to the mix and it will set off Xray machines a mile away |
#9
|
|||
|
|||
Quote:
Quote:
__________________
DiaHero Foundation - helping people manage diabetes. Sending diabetes supplies to Ukraine now, any help is appreciated. DDR AK furniture and Norinco M14 parts kit: https://www.calguns.net/calgunforum/....php?t=1756292 |
#10
|
||||
|
||||
Law School Dropout
Yes we do live in California. But keep in mind the the law states "After removal of grips, stocks, and magazines, the weapon is not as detectable..." it does not state that internal workings and parts AKA the lower parts kit (LPK) have to be removed. I know there are LPK's made of polymer minus the springs (METAL) but the majority of LPK are detectable by these standards.
But perhaps you're right and these homemade casted polymer lowers can be considered undetectable then that means all those other manufatureres and owners of polymer 80% lowers made by diylower.com, poly80.com, and polymer80.com are also undetectable... someone should warn them all |
#11
|
|||
|
|||
Their definition is a copy and paste of the federal law I quoted you need to look up the full code
title 18 section 922 (p)(1) It shall be unlawful for any person to manufacture, import, sell, ship, deliver, possess, transfer, or receive any firearm - (A) that, after removal of grips, stocks, and magazines, is not as detectable as the Security Exemplar, by walk-through metal detectors calibrated and operated to detect the Security Exemplar; or (B) any major component of which, when subjected to inspection by the types of x-ray machines commonly used at airports, does not generate an image that accurately depicts the shape of the component. Barium sulfate or other compounds may be used in the fabrication of the component. (2) For purposes of this subsection - (A) the term "firearm" does not include the frame or receiver of any such weapon; (B) the term "major component" means, with respect to a firearm, the barrel, the slide or cylinder, or the frame or receiver of the firearm; and (C) the term "Security Exemplar" means an object, to be fabricated at the direction of the Attorney General, that is - (i) constructed of, during the 12-month period beginning on the date of the enactment of this subsection, 3.7 ounces of material type 17-4 PH stainless steel in a shape resembling a handgun; and (ii) suitable for testing and calibrating metal detectors: Provided, however, That at the close of such 12-month period, and at appropriate times thereafter the Attorney General shall promulgate regulations to permit the manufacture, importation, sale, shipment, delivery, possession, transfer, or receipt of firearms previously prohibited under this subparagraph that are as detectable as a "Security Exemplar" which contains 3.7 ounces of material type 17-4 PH stainless steel, in a shape resembling a handgun, or such lesser amount as is detectable in view of advances in state-of-the-art developments in weapons detection technology. So again a plastic frame or receiver by itself is perfectly legal as long as it either sets off a metal detector, or fully represents it's shape in an X-ray machine. it does not have to look like a gun and it will show up on X-ray Last edited by kcstott; 12-08-2013 at 4:50 PM.. |
#12
|
||||
|
||||
All I know is as soon as I see some pictures of these cast lowers made from a mold they work alright I'm in. I'm inviting everyone in the neighbor including CalGuns members over to use my mold. I found this old thread off CalGuns http://www.calguns.net/calgunforum/s...d.php?t=510765 the_natterjack said in 2011
"So I'm thinking, rent a mold, mix chemicals, pour, and homemade receiver." Brian |
#13
|
|||
|
|||
Quote:
60 square inches of part surface @ three ton per square inch a 250 tone machine would do it all day long. Glass reinforced nylon 30% long fiber I still say you could do it for about $3 in material so figure $10 a part in cost plus the mold. @ $50 each. You'd have to make and sell 4000 parts to break even. You could try this castable resin Last edited by kcstott; 12-08-2013 at 5:34 PM.. |
#14
|
||||
|
||||
Quote:
|
#20
|
||||
|
||||
i too am thinking about the threads maybe they could provide wax plugs to add to the mold that you can melt out when cured
the grip screw is not critical as the bolt will generally self tap if the hole is almost the right size the bolt stop is the next questionable area i assume it has a sold triggerguard to add strength i cant wait till 3d printing comes down and plastic strenght rises i have this idea for a pinchy take down nubs imagine them as little clamps built with living hinge in the polymer so no takedown pins needed also same for the safety detent just a sturdy flexible nub arm |
#21
|
||||
|
||||
Yesterday morning I emailed them that I was very interested in their product and they sent back a link to fill out a form/agreement to request a sample-prototype. I filled out the request right away and today I got a tracking number from them and it looks like it shipped it out yesterday!
|
#22
|
||||
|
||||
Quote:
__________________
NRA lifetime member 2AF Defender member When did I go from being a "citizen" to a "taxpayer"? Jon Lovitz: ‘I can’t wait to go to a hospital run by the DMV!’ Peace, love, and heavy weapons. Sometimes you have to be insistent." - David Lee Roth |
#24
|
||||
|
||||
Good enough.
__________________
NRA lifetime member 2AF Defender member When did I go from being a "citizen" to a "taxpayer"? Jon Lovitz: ‘I can’t wait to go to a hospital run by the DMV!’ Peace, love, and heavy weapons. Sometimes you have to be insistent." - David Lee Roth |
#25
|
||||
|
||||
Here is a question you guys wanting to use plastic receivers should ask yourselves:
Companies are all about profit and making something in plastic is a lot cheaper than doing the same in metal. If that is the case, and since almost every major firearms maker has a polymer frame pistol model, why are none of them making plastic receivers for high powered rifles? We are not talking about a Glock moment where everyone said plastic would not be durable for a major gun component. The industry knows plastic is viable in firearms yet to date no major gun manufacturer makes polymer receivers for ARs or other high powered rifles. If the big companies don't want to make something that would make larger profits for them that should tell you something. |
#26
|
|||
|
|||
The issue has zero to do with the strength of polymer. It has to do with the cost of the mold and uncertain ROI.
CNC machines are far more common, aluminum is far cheeper, and in a properly configured machine can produce a lower pretty damn quick in a material the everyone respects. Polymer not so much at lest in an AR configuration. Now saying that a major manufacturer hashed used polymer as an action base is kind of rediculous. Of course they haven't they also have not and can not make an action out of aluminum. The actions that are made from aluminum have steel bolts and steel inserts that support the locking lugs. Just like an AR has a barrel extension and a steel bolt. |
#27
|
||||
|
||||
Quote:
BTW There are a few high power rifles and shotguns made by large firearms companies in the market today so I'm actually kinda confused as to what you consider "high powered" |
#28
|
||||
|
||||
It's here!
Just looked up the tracking number and it's been left at my front door and I'm out with the wife Xmas shopping AHHHHHHH! I work tonight but I'll try to get some pictures up of the mold before I head to work.
|
#30
|
||||
|
||||
tag
__________________
Quote:
|
#31
|
||||
|
||||
Above is a quick picture of what they sent me to try out for free but it says I have to return it no later than 3 business days or be billed. They did enclose return label tho so no biggie. Its marked sample and the kit includes a two part silicone mold, a mixing cup, a large syringe/injector, a mixing stick, a bottle with a thick black liquid and instructions. What you see is what I got. Says I can make two with this sample kit. I feel like taking the night off to start pouring me out some lowers. Off to work. |
#32
|
||||
|
||||
Wow, this is gonna be AWESOME
Take some video, please! I don't think we'll care of the quality, as long as it's a moving picture
__________________
Quote:
1. The weapon of Kestryll Hammered: 1. Getting BTFO by Kestryll with the hammer |
#33
|
||||
|
||||
Yeah I see no buffer tube part to the mold so looks like a POS waiting to sucker people into wasting money on something that's not complete.
Edited to say now I see it, hopefully the mold don't get stuck in the and get damaged. Last edited by michiganboy; 12-12-2013 at 8:40 AM.. |
#34
|
|||
|
|||
Look closer it's there, it is going to require taping after molding but no biggie
|
#35
|
||||
|
||||
A threaded buffer tube is there in two parts half on one side of the mold and half on the other side. Not home right now but I wish I was so I could get this started and take more pictures.
|
#39
|
||||
|
||||
Very cool. wonder how well works with wax...
__________________
|
#40
|
||||
|
||||
duh
Although I worked all last night I just couldn't sleep knowing I had AR Mold waiting for me(Mistake #1 get sleep). I put the two part mold together sucked up the resin in the syringe/injector and started injecting in the resin. I poured to the top and left it on my kitchen table to dry. I came back to get a refill on my coffee and OMG the resin leaked out of the sides which thank God was easy to clean up it came right off my kitchen table (Mistake#2 didn't do this in the garage). So I kinda missed the part in the instructions where it said to put the mold in the pine box in came in (Mistake #3 didn't read all the instructions). Apparently the the pine box the mold came in was part of the kit which I kinda broke (Mistake #4 used gorilla strength). Out of the excitement of receiving the mold yesterday I didn't see big red writing on the pine box stating not to break open but instead unscrew open. The pine box was suppose to be used to hold the two part mold together tight. Well since I already screwed it up I decided to take the two mold apart and this is what I found:
The only solid part was around the mag well since all the resin poured out above that was thin which makes sense because it was lacking polymer resin. 1st attempt was a FAIL but I'm pretty sure the next attempt will be a success. I called up GunMold up and they said I was sent enough polymer resin for 4 lowers so thankfully I'm not out...yet. The polymer resin cleaned up really easy so that's a relief. I'm gonna get a little sleep and try again later after I completely read the instructions this time. |
Thread Tools | |
Display Modes | |
|
|