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Casting & Stabilization Making your own blanks & stabilizing wood blanks.


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Old 09-25-2017, 05:53 PM   #11 (permalink)
 
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Quote:
Originally Posted by More4dan View Post
I guess one could melt down a cutting board to make molds instead of plastic bottles.
I guess if you want a sheet thicker than a standard cutting board.

When I first posted my plan was to make sheets but now I'm making blocks for molds and other things like jigs.

These blocks are over 1" thick and I'm going to use them to make a one piece mold. Well really a block with two removable ends since this blank has a mandrel running through it.
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Old 10-08-2017, 12:37 PM   #12 (permalink)
 
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Here is my latest block I think I have enough big stock for jigs and stuff for awhile.
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Old 12-11-2017, 04:04 AM   #13 (permalink)
 
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LDPE will work much the same way as HDPE, it just isn't quite as hard. Hard enough however to make molds out of.

You can buy POUNDS of it, cheap...
https://www.ebay.com/itm/2-kg-Plasti...8AAOSwLmVXD3uS

This is what I use. It is form-able just like HDPE, toaster oven, cookie sheet, and a board of Melamine clamped to the top when it's cooling. I use it for runners for the saws, making jigs, and now making molds. Works great.
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Old 12-11-2017, 08:23 AM   #14 (permalink)
 
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If you want to go cheap with molds, try the little clear boxes that nuts & screws come in. Iíve used them and they work great.

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Old 12-11-2017, 09:01 AM   #15 (permalink)
 
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It boils down to what your time is worth to you. I know a few people that do this same type of thing for making their own 3D printer filament. However, the time it takes to make your own filament is not worth the $15 for a 2# spool. I think they spend more time making the filament than they do printing. But that is what they enjoy doing.

Keep in mind that when you recycle like this, each time you melt the plastic you loose some of it's chemical makeup in evaporation. If you are only doing it once, you will be fine but after the 2nd or 3rd time the HDPE is no longer HDPE and probably will crumble apart when cooled. The guys that recycle ABS filament say they can do it once. After that the ABS won't hold together properly and will result in very crappy prints. I have no clue how well HDPE will recycle.

In any case, you might enjoy this video.
https://youtu.be/-zqp_zA6m-w

And here is a commercial version
http://plasticbottleandcancutter.com/products/
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Old 12-11-2017, 03:30 PM   #16 (permalink)
 
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Did you see this?
http://www.penturners.org/forum/f158...making-151966/
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