Forum Replies Created

Viewing 8 replies - 1 through 8 (of 8 total)
sort on most likes
starter
07/02/2019 at 17:42
6

@cgoflyn  that rant was off topic and a bit unnecessary, please start a new thread and refrain from this kind of trolling.

starter
21/12/2018 at 05:17
0

What about using the gas to head oil then piping the hot oil through/around the area that needs heating.  Controlling oil temp would be easier than a direct flame as you would heat a reservoir of oil.  An engine oil pump should be easy and cheap to get.  An oven could even use a heat exchanger as an element.

starter
20/12/2018 at 23:41
1

I tried my dad’s and no.  The plastic is too thin and goes through the machine without being cut our sits in the hoper area and doesn’t make contact with the blades.

There is a dangerous version mentioned here

In reply to: grinding plastic

starter
20/12/2018 at 23:22
0

Wouldn’t the plastic act like a grease?

starter
20/12/2018 at 23:20
0

A gas oven?  Temperature control will be harder and plastic smoke is flammable, so very risky.

 

LPG generator?

starter
20/12/2018 at 23:02
2

Coconut oil might be burning off.  It starts smoking at 350f 180c and your ovens at 220c.

Refined soybean and sunflower oils have some of the highest smoke points, at around 450°F 232°C, and avocado oil’s smoke point is 520°F  270°C.

 

A fish&chip shop might be a good place to get cheap cooking oil.

 

A vacuum chamber would be great for pulling out those air pockets,  but complex to build.

starter
20/12/2018 at 22:46
0

I’m a visual artist mainly working in sculpture and was thinking of using soft plastic bags combined with sand or other materials to form sculpture.  Kind of like working with a plastic asphalt mixture. Even if i only made small batches they could be combined by heating the cold material with a hot air gun.

 

starter
20/12/2018 at 12:55
4

@gcadou  I have been using a kitchen blender and was thinking of scaling it up with an angle grinder as they are easier to get than an electric mower. It seems like the cheap and easy build.  The blender blade design is needed to keep the plastic mixing.

I was also looking at buying a plastic shredder from aliexpress  but I can’t afford the $2000+nzd  and the 2nd hand market in New Zealand for these is empty.

The CNC cost of the precious plastic is also beyond my budget,  so have been looking at alternatives for that style of machine.  I was thinking of something like these milling heads at around $20 each might do, if a number are combined into one shaft.  Or a Woodworking Finger Joint Shaper Cutter  <= which could cut its own key(?- the grooved slots that the blades pass through and the plastic doesn’t).

 

So many options,  I might start with the angle grinder blender because it’s easy even if it requires more operating time in loading and unloading the bucket.

Attachments:
Viewing 8 replies - 1 through 8 (of 8 total)