Trashy bling



Author Topic: Trashy bling  (Read 255 times))

Offline WhatUPSbox?

  • Marksman
  • ***
  • Posts: 465
  • yes
  • Real Name: Stan
Trashy bling
« on: February 09, 2019, 05:56:09 PM »
I started tinkering with DIY injection molding of recyclables. This power adjuster is HDPE (detergent bottle, wife's flower pot  :-X, pill bottle, and a hint of milk jug). I formed a cylinder around 3/8-16 rod and then turned the rest of the features. The HDPE is a lot softer than Delrin (so the 8-32 attach threads may not last forever), but for some things, it might be fun.

Now to dive into the recycle bin for more colors
  • N. San Diego County, CA

Offline SwampHunter

  • Plinker
  • **
  • Posts: 243
  • yes
  • Real Name: Travis
Re: Trashy bling
« Reply #1 on: February 09, 2019, 06:29:33 PM »
Looks cool!
  • N Florida

Offline Nvreloader

  • Expert
  • *****
  • Posts: 1385
  • Real Name: Don
Re: Trashy bling
« Reply #2 on: February 09, 2019, 07:59:14 PM »
WUB

Wow, built in Camo, just need some Greys/Browns/ greens etc.  8)

Lookin good......

Tia,
Don
  • Western  NV
Hammerli 850 Air Mag -17 cal x 2, 22 cal
QB-79 - 22 cal
AF Recon Condor 22 cal- pending
CF 4500 45 min SCBA tanks x 3, w/SB F-10 compressor

"We must reject the idea that every time a law's broken, society is guilty rather than the lawbreaker,
It is time to restore the American precept, that each individual is accountable for their actions."
Ronald Reagan
-----------------------------------------------------
"Speeds fine, but Accuracy is final"

Offline uncle paulie

  • GTA Moderator
  • GTA Senior Contributor
  • *****
  • Posts: 3745
  • Real Name: Paul
Re: Trashy bling
« Reply #3 on: February 11, 2019, 07:10:46 AM »
Recycling starts in the home! Neat idea!

pv
  • NJ

Offline darkcharisma

  • Plinker
  • **
  • Posts: 227
  • yes
  • Real Name: duy
Re: Trashy bling
« Reply #4 on: February 11, 2019, 01:20:47 PM »
now now. you need to show your jig. how dod you make the molds.
  • Sachse, TX, USA

Offline cobalt327

  • Expert
  • *****
  • Posts: 1928
  • Real Name: Mark
Re: Trashy bling
« Reply #5 on: February 11, 2019, 01:59:44 PM »
The look reminds me of "Candies" silicone slotcar slicks from the '60s!
  • GA, USA

Offline WhatUPSbox?

  • Marksman
  • ***
  • Posts: 465
  • yes
  • Real Name: Stan
Re: Trashy bling
« Reply #6 on: February 11, 2019, 05:50:50 PM »
now now. you need to show your jig. how dod you make the molds.

Fair enough...

I built something similar to the arbor press based machine described here (his second configuration) http://www.scorchworks.com/Injection_molding/injection_molding.html If you google DIY injection molding you'll see a lot of different designs. Since I had a small arbor press, I went that route. It also provides a lot of force in a compact size. I also had a couple of cartridge heaters so I went with an aluminum block/piston for the hot end instead of the more common pipe and band heaters. The controllers & SSR are cheap and easy to set up. My set-up below.

For molds, the right answer is to machine them out of aluminum. So far I've been making simpler shapes and then final machine as needed. The power adjuster was made in an aluminum tube with two endcaps that had holes to keep the 3/8-16 rod in place to form the threads. I turned the outside afterwards. I've also made things with wooden molds (need something that won't split) and constrained plaster molds.

This is definitely in the tinkering category. Lots of fails, voids, etc. It is much easier and safer just to buy a Delrin rod or block. I've been playing with HDPE (recycle #2). It is fairly tough but soft, definitely not a Delrin replacement for a lot things. One interesting approach is embedding metal parts into the plastic. I made some knobs with a 2" 1/4-20 bolt embedded that turned out well (yeah I know, a couple of bucks at HD). One also has to respect that when you start heating them, the plastics can be nasty stuff....Some you don't touch at all, others want lots of ventilation, treat it with at least the same caution as metalcasting.

As a reward you can get some interesting and random affects.....and spend a bunch of time doing it
  • N. San Diego County, CA

Offline darkcharisma

  • Plinker
  • **
  • Posts: 227
  • yes
  • Real Name: duy
Re: Trashy bling
« Reply #7 on: February 12, 2019, 05:21:06 AM »
excellent jig! this will give you so much creativity! heck, you can even make gun stocks with it. but that will be time consuming for sure. beautiful marbles!!!!!
  • Sachse, TX, USA

Offline maraudinglizard

  • If you are not living on the edge, you are taking up to much space.
  • GTA Senior Contributor
  • ******
  • Posts: 2732
  • Real Name: Kris
Re: Trashy bling
« Reply #8 on: February 12, 2019, 06:15:21 AM »
Air gun targets that you can recycle, endless army guys and dinosaurs.
  • Northwest Florida
Crosman
1377(30+ years)
1322
2240
66
1077
2300kt.177
2400kt.177
1720T
G1 Extreme .177
Vigilante
Venom .22
Win M14
RWS 34
Urban.22
Daisy 1000, 717, 880
Umarex Fusion .177, Gauntlet .22
Wildfire.177
Maxi.177
Disco.22
Prod.22
Gen 2 Mrod .25
Colt PM LE
Auto Air ll .177
S&W M&P 45 .177
P-17, QB78 .22 & .177
Benji Trail NP Pistol .177
D E Pistol .177
Sig Sauer P250.177, MCX.177
Rex P .357
Hatsan 25 pistol .22, 1000x .25, 135 QE .30
Carnivore
909 and Recluse
Kral Puncher Mega Marine .177

Offline Mole2017

  • Squirrel Researcher
  • Expert
  • *****
  • Posts: 1063
  • Real Name: David
Re: Trashy bling
« Reply #9 on: February 12, 2019, 01:51:52 PM »
Air gun targets that you can recycle, endless army guys and dinosaurs.

There ya go!
  • Pendleton, SC
Gamo CFX .177 and .22, old style triggers
BSA R10 MK2 .177
Crosman 1377

Offline WhatUPSbox?

  • Marksman
  • ***
  • Posts: 465
  • yes
  • Real Name: Stan
Re: Trashy bling
« Reply #10 on: February 12, 2019, 03:18:29 PM »
Well, gun stocks may take a while. Right now I can push about 2 cu in of plastic per shot. There are some airgun related things I want to try.
  • N. San Diego County, CA

Offline darkcharisma

  • Plinker
  • **
  • Posts: 227
  • yes
  • Real Name: duy
Re: Trashy bling
« Reply #11 on: February 12, 2019, 10:49:27 PM »
i love the idea of airgun targets too...make a big marble bunny.

  • Sachse, TX, USA

GTA - What's been your success with air gun target practice?