m4 stock puzzle?!?!

mayotobo

i bought a s system froma mate of mine and it was a bit underpowered so i bought parts.
but when i started to strip it the head was worn down on the screw that holds the stock tube to the reciever!!:eek:
does anyone have any idea of how to remove the screw without damaging any other parts?

Thanks:):confused::pac:

Firekitten

It may be possible to unscrew the ring at the bottom of the stocktube, and thus loosen the screw inside the stock... perhaops then you can get enough purchance to turn it.

Phractal

Now this is not how I remove worn screws. But a friend uses a dremel to cut a 'slot' in the screw, pops in the driver, and removes the screw - replacin it.

Firekitten

If you can reach a dremel down 8 inches of stock tube phractal, you're welcome to try... or will you build a laser?

Phractal

LOL. I did not realize the thing was recessed like THAT. I meant worn screws in general. *laughs* You just put me back in my good mood!

As for the laser? No.

Ok, I am stumped here. What is the 'normal' thing you lot do to worn, heavily recessed screws?

Firekitten

Hey Mayotobo :P

Love the sig Perhsps you should perfect the art on your mouth first

Leftyflip

I usually build a big machine and laser contraption that zaps the offending screw out. In fact I have drawings on my desk if you want.



Sorry but it had to be done.

Witcher

Leftyflip wrote: »

I usually build a big machine and laser contraption that zaps the offending screw out. In fact I have drawings on my desk if you want.



Sorry but it had to be done.

Best option I've found is to manufacture a 5mm wide tactical nuclear screw remover, launch it down the stock tube for a 50 mm wide B2 bomber flying at 60000km/hr powered by a lipo and bobs your uncle:pac:

Leftyflip

Blay wrote: »

Best option I've found is to manufacture a 5mm wide tactical nuclear screw remover, launch it down the stock tube for a 50 mm wide B2 bomber flying at 60000km/hr powered by a lipo and bobs your uncle:pac:

You forgot the ion laser ray to guide it to within 0.00000000001mm.

Phractal

I love you guys and gals for a reason...

On a more practical scale, could one drill out the screw or something then re-thread it?

LOL dont make me suggest using a miniature shaped charge to obliterate the offending screw... Or melting it with a super acid like HF...

Leftyflip

Ewwwww a dude loves me!!

*scrubs*

*DOBBY*

See if you can get an 'Extractor bit', its basically used for screws bolts that have their head worn. it has cutting edges that dig into the screw and help turn it. You can put them into an extended drill bit holder to get down into the stock tube.
They come in a variety of sizes and you should be able to pick some up in a good hardware or tool shop.:D

Phractal

Ger: Its ok... Wasnt meant in that way... Much :P (if it was herself would be VERY angry with me)

Dobby - didnt think of that, sounds like a plan

Firekitten

Unscrew the back ring on the stock tube, then place the entire unit in the freezer... take it out, and undo the screw. It will have shrunken in the cold, and it should reduce the bite against the stock, allowing it to undo. Other than that... your options involve drilling the head off and pulling it out that way.

Masada

The stock cant be rotated on the receiver as it is so you wont be able to rotate it that way. the best thing do do is get a long flat blade screwdriver (I use 8 inch power screwdriver bits) that fits nicely in the cross head of the screw and hammer in to the groove (don't go do town on it) until they hold nicely, then attach the power screwdriver/drill on low torque and unscrew it while keeping pressure behind it, it'll come out no probs.

PS, Cold hardens metal, and will have a shrinking effect on both the threaded hole and the bolt itself. Heat if your friend of you have to remove a stuborn bolt as the metal becomes more malleable when it softens.

Firekitten

Nobody suggested rotating it... just rotating the locking ring to allow the screw some slack to make gripping it easier from the inside.... get what I mean?

I have used cold to undo this exact situation before... worked a treat. Heat however, will have undue effects considering his gearbox and wriing are all still in this, and heat will cause it to EXPAND and be tighter.

When the screw hole contracts, it will be Outwards, not inwards, so th gap will widen, not tighten with the shrinking metal of the screw. Have you tried it? the physical properties of metal arent quite as simple as you seem to imagine.

As for hitting the back of that screw with a screwdriver and hammer... thats connected directly to the spring guide... and the rear of the gearbox shell... there is a real danger of cracking the shell doing that.

Masada

Yeah, I have, (practically every day in my trade before airsoft).

Its not about contracting or expanding, (but it will tighten anyway) its about the hardness of the metal, softer it is, the easier it so to undo.,

Once its out, you can take Practals approach and cut a groove in it to make it usable again if you don't have access to a new one.,

Shiva

Blay wrote: »

Best option I've found is to manufacture a 5mm wide tactical nuclear screw remover, launch it down the stock tube for a 50 mm wide B2 bomber flying at 60000km/hr powered by a lipo and bobs your uncle:pac:

Firekitten

Masada wrote: »

Yeah, I have, (practically every day in my trade before airsoft).

Its not about contracting or expanding, (but it will tighten anyway) its about the hardness of the metal, softer it is, the easier it so to undo.,

Once its out, you can take Practals approach and cut a groove in it to make it usable again if you don't have access to a new one.,

Look, I dont want to start problems again... I have as much technical experience as you, so lets not begin a pissing match. I'm offering a different technical standpoint. I have used the technique, and no, it doesnt tighten, the metal contracts differently. you havent tried it have you? it IS about contracting or expanding. and to get STEEL to soften enough to undo, you'd nearly have to melt the aeg, which would be a temperature that would see off rubber and plastic gearbox components and wiring insulation. What do you suggest? gas mark 5?



Shiva: LOL

Masada

#1, I doubt it, really.

and my suggestions were to the OP, I honestly don't care how you do it, if you've found a way, more power to you. best of luck with it.


Tony: I reckon lefty looks like that underneath all that gruaig.,

EDIT: now that i take a second look, Is it just me that sees a striking similarity between Dr whatsisname and Niall/Sodosowrds! :eek:

Shiva

Masada wrote: »

EDIT: now that i take a second look, Is it just me that sees a striking similarity between Dr whatsisname and Niall/Sodosowrds! :eek:

Bloody hell...I think you're on to something.

That would explain why he can get half the Hawks into that little car of his - its a flippin' TARDIS !

Firekitten

Masada wrote: »

#1, I doubt it, really.

and my suggestions were to the OP, I honestly don't care how you do it, if you've found a way, more power to you. best of luck with it.


:eek:

I was answering the OP also. He wanted advice that works, Ive used it, it works. End of story.

Leftyflip

Masada wrote: »

Tony: I reckon lefty looks like that underneath all that gruaig.,

Ah here, less of that.

mayotobo

ive figured it out by gettin freaky with my creativity. i used "hard as nails" putty stuff yoke amabob and put it on the end of a screwdriver. then push it into the screw head. it shaped in the form of the worn side which gave it more grip cos it was very rough. the screw left its print on the other side and the next day when the putty was hard i just pushed and rotated the screw. problem solved.

thanks everyone for the erm...creative approaches and practical approaches.:):D

Puding

mayotobo wrote: »

ive figured it out by gettin freaky with my creativity. i used "hard as nails" putty stuff yoke amabob and put it on the end of a screwdriver. then push it into the screw head. it shaped in the form of the worn side which gave it more grip cos it was very rough. the screw left its print on the other side and the next day when the putty was hard i just pushed and rotated the screw. problem solved.

thanks everyone for the erm...creative approaches and practical approaches.:):D

have to say excellent problem solving skills a novel solution

mayotobo

years of art and crafts stuff

Phractal

****ing excellent idea there.

Firekitten

Yup... never thought of that... nice work +1