<![CDATA[SoliForum - 3D Printing Community — pla shredder]]> https://www.soliforum.com/topic/9054/pla-shredder/ Wed, 15 Jun 2016 15:33:28 +0000 PunBB <![CDATA[Re: pla shredder]]> https://www.soliforum.com/post/124186/#p124186 Less waste plastic in general is a good thing. It just isn't economical on a small scale though. The only way I can see it being done is to have a central service you send your junk to and they send you back shredded junk. The problem there is getting other stuff mixed in. If you only did ABS, it could be done. But someone is going to screw up and send PLA mixed in, or Nylon, etc.. What then? It's tough to tell the difference sometimes just by looking. And you have to pay someone for their time grinding up your junk, so even then, it's unlikely to be less than you can buy new pellets for.

On top of that, most people recommend you mix in fresh plastic to help with heat cycles and such causing problems. So you still have to buy fresh pellets. If I could buy a working chipper at, say, $100 I'd be all over it. But $400+ and not motorized? Nope. Sure, I could DIY a power system for it. But at that price level, it should be turnkey.

I'd also pay a few bucks a pound to have my junk shredded, but I don't see how anyone can make money on it at a price people would be willing to pay. Particularly with shipping added into the mix.

]]> Wed, 15 Jun 2016 15:33:28 +0000 https://www.soliforum.com/post/124186/#p124186 <![CDATA[Re: pla shredder]]> https://www.soliforum.com/post/124117/#p124117 I have a bucket of brims, rafts, and failed prints to hopefully grind up and reuse one day - although realistically it'll never be economical since I'd need ~100-200lbs of plastic to make it to where I would be saving money with a $400 shredder vs buying new virgin pellets for $2-4 a lb.

Do you guys go through that much plastic or is it purely a 'willing to spend more because recycling helps the environment' kind of reasoning?

]]> Tue, 14 Jun 2016 03:17:25 +0000 https://www.soliforum.com/post/124117/#p124117 <![CDATA[Re: pla shredder]]> https://www.soliforum.com/post/123998/#p123998 With shreaders, to get smaller chips, you just recycle the spreading till you get to a point where most of the chips fall through the shreader without getting chopped. That size is a fraction of the shreader teeth width (between counter rotating teeth).

]]> Fri, 10 Jun 2016 13:36:43 +0000 https://www.soliforum.com/post/123998/#p123998 <![CDATA[Re: pla shredder]]> https://www.soliforum.com/post/123997/#p123997 I got one of these shredders. Brilliant mini machine.
I'm currently putting a 300 watt golf cart motor, I think, one with a screw right angle.
Powered with a 50 volt el cheapo Chinese dc supply. Runs at 80 rpm, no load.
Reducing the speed with a 15/9 sprocket to a 76 tooth gear industrial chain, connected to a filed other type of sprocket that goes on the shreader nut. The torque from this should be huge and so I have implemented a arduino motor reverser, using motor current as the torque indicator, although I have not experimented with the current sensor on the motor in use.  I want either a six second or a three second rotation time to start off with.

I will post pictures when completed soon, a week of two from now.

]]> Fri, 10 Jun 2016 13:27:24 +0000 https://www.soliforum.com/post/123997/#p123997 <![CDATA[Re: pla shredder]]> https://www.soliforum.com/post/100221/#p100221 hi  all
+1 tin falcon

]]> Tue, 30 Jun 2015 17:38:05 +0000 https://www.soliforum.com/post/100221/#p100221 <![CDATA[Re: pla shredder]]> https://www.soliforum.com/post/100197/#p100197 PLA biopolymer/plastic common to 3d printing.
Shredder a device for cutting things into small pieces.  In this case the device cuts things like bad prints incomplete prints pieces of filament to short to use into pieces small enough to use in a home extruder . A home extruder makes new filament for 3d printing.
Basical the shredder  a tool for recycling plastic.

]]> Tue, 30 Jun 2015 08:11:38 +0000 https://www.soliforum.com/post/100197/#p100197 <![CDATA[Re: pla shredder]]> https://www.soliforum.com/post/100194/#p100194 Hi All.,

I am new to this forum .Can you please tell me ? what is PLA shredder. How it is helpful for 3d printing.

]]> Tue, 30 Jun 2015 06:44:27 +0000 https://www.soliforum.com/post/100194/#p100194 <![CDATA[Re: pla shredder]]> https://www.soliforum.com/post/95822/#p95822 hi wahada
sorry to post now.
the electrical motor is 2750rpm   round per minute
with the pulleys small and high 
small pulley 50mm. high pulley180mm    so ratio 1/3.6
and the gear box has a ration 1/4
and
yes i have shredded ABS with it but  it's too fast  and the motor break a lot of so i cut abs pieces before  shredding
sorry for my english

]]> Thu, 14 May 2015 16:58:42 +0000 https://www.soliforum.com/post/95822/#p95822 <![CDATA[Re: pla shredder]]> https://www.soliforum.com/post/94046/#p94046 Thanks for that link Tim. Lots of good info there.

]]> Fri, 24 Apr 2015 17:50:28 +0000 https://www.soliforum.com/post/94046/#p94046 <![CDATA[Re: pla shredder]]> https://www.soliforum.com/post/94031/#p94031 wahada, you might want to talk to Flateric as well:

http://forum.seemecnc.com/viewtopic.php?f=80&t=6285

]]> Fri, 24 Apr 2015 16:46:21 +0000 https://www.soliforum.com/post/94031/#p94031 <![CDATA[Re: pla shredder]]> https://www.soliforum.com/post/94026/#p94026 Hello Fredaxe !!!

I like your motorized shredder a lot. Much better than turning by hand with a wrench.
I have a few questions about your setup:

1. What is the HP and rpm of the electric motor?

2. What is the gear ratio of the gear box?

3. Have you shredded ABS with it?

Thanks

]]> Fri, 24 Apr 2015 16:24:27 +0000 https://www.soliforum.com/post/94026/#p94026 <![CDATA[Re: pla shredder]]> https://www.soliforum.com/post/88002/#p88002 Kind of kills the idea of the shredder.  If I were to purchase a blender to trash I wouldn't need a shredder.

]]> Tue, 03 Mar 2015 01:42:34 +0000 https://www.soliforum.com/post/88002/#p88002 <![CDATA[Re: pla shredder]]> https://www.soliforum.com/post/87878/#p87878 If the bits are too large for the filstruder then put them in a cheap blender. It will break them down without any problems.

]]> Mon, 02 Mar 2015 16:58:45 +0000 https://www.soliforum.com/post/87878/#p87878 <![CDATA[Re: pla shredder]]> https://www.soliforum.com/post/87597/#p87597 hi elmoret
you "ve right
the shred are too large for filastruder
i'm making one with a screw 40mmm diameter
http://www.hostingpics.net/viewer.php?i … MG0266.jpg
http://www.hostingpics.net/viewer.php?i … MG0264.jpg
http://www.hostingpics.net/viewer.php?i … MG0257.jpg

]]> Sat, 28 Feb 2015 05:07:36 +0000 https://www.soliforum.com/post/87597/#p87597 <![CDATA[Re: pla shredder]]> https://www.soliforum.com/post/87560/#p87560 Superdave wrote:

That "shred" looks far too large for the Filastruder to use.

This guy uses one of Thymark's shredders with a Filastruder:

http://forum.seemecnc.com/viewtopic.php?f=80&t=6285

]]> Sat, 28 Feb 2015 00:55:58 +0000 https://www.soliforum.com/post/87560/#p87560