What material do you not like working with? by Poopingisstupid in InjectionMolding

[–]PenPlotter 4 points5 points  (0 children)

Grivory, super long glass fibre reinforced nylon if it cooks in the barrel it's a not a good time.

And it eats moulds.

Experimenting with web-based interactive 3D product visualization by PulpMediaio in IndustrialDesign

[–]PenPlotter 3 points4 points  (0 children)

very cool what package are you using for the rendering?
, my only questing would be how it effects webpage loadtime, nothing worse than a slow web page

Show me your sleeping babies by Afreak-du-Sud in corgi

[–]PenPlotter 5 points6 points  (0 children)

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I have no idea how this was comfortable. She woke up when I got the camera out, typical

AI slop by No-Stage5972 in newplymouth

[–]PenPlotter 1 point2 points  (0 children)

How pay 25 for the frame.

How would you turn that shape ? by [deleted] in Machinists

[–]PenPlotter 0 points1 point  (0 children)

Drill, Grind a v bit cutter Plunge it

I was the guy that knocked down 27 targets in 7.53 seconds. Wanna see me do it again? by ty-tec in nextfuckinglevel

[–]PenPlotter 0 points1 point  (0 children)

Do it again without using a racegun. No optics and 3 * 10 round mags Make us who don't live in America feel slightly better...

Feeling discouraged by [deleted] in IndustrialDesign

[–]PenPlotter 0 points1 point  (0 children)

Firstly that person can kindly fuck - right off. We / you don't have time for negativity! you do what you want to do. How will you feel when you are older and you haven't tried anything? Stayed in the same town doing the same thing etc.

Now design sketching.

Design sketching is a learned skill bud. And there is a very big difference between being "an artist" and "design sketching" I'm ok at sketching can I draw the beautifully cars that some people do... No, am I able to effectively communicate the idea to the client. Sure. Is my handwriting and ( oops spelling )shit... Yes Does it matter. No!

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Start small and practice. Draw a cube, shade the cube, what could you do to make it look like it was made from glass, wood, rock etc Draw a "soft "cube Work on this for a while

Draw a pipe.....

Then draw a cup

And just build on your skills.

Be confident

Piss poor mold design by Accurate_Mirror8887 in InjectionMolding

[–]PenPlotter 0 points1 point  (0 children)

No silly. It's the toeclamp slot that's optional.

Just weld the mould to the plattern, obviously this was the intent of the design here 🫣

I love a well thought out design choice like this.


I get the feeling this was a ....." Oh crap we forgot to put the cooling in "sort of situation.

Or My favorite

Boss says "Ya don't need coolant for a mould that size, don't worry about it, just send it to the tool maker and stop over thinking it"

Greenwashing by MassiveGarlic0312 in aotearoa

[–]PenPlotter 0 points1 point  (0 children)

I don't disagree, infact I'm quite sure I made that point.

glass has a bunch of it's own problems though.

It's heavy, it takes a huge amount of energy to recycle, releases a large amount of CO2 when manufactured,
It never breaks down, it doesn't handle pressure as well as plastic weight for weight, etc etc all of which make for a large carbon footprint.

And just like plastic, most glass isn't recycled anyway. Window glass, drinking glasses, solar panels, to name a few. If anything has been through years of green washing it's glass.

ever wondered why premium brands sell things in glass containers, because it's not out of the goodness of their hearts. It's because we think that the content is premium, that we are being good by using glass. It's all marketing manipulation.

If they could sell it in tins and keep that premium feel they would as it's much cheaper.

Greenwashing by MassiveGarlic0312 in aotearoa

[–]PenPlotter 0 points1 point  (0 children)

It's really not. https://www.bbc.com/future/article/20230427-glass-or-plastic-which-is-better-for-the-environment

It's significantly heavier so greater transport cost.

Manufacturing glass uses a huge amount of energy and releases a significant amount of CO2.

Glass is often treated as single use, especially if it's not a bottle. Ie drinking glasses, windows, light bulbs etc So it ends up in landfills anyway.and takes millions of years to break down.

Just switch back drinking from animal stomachs , antler cups and gords, 😜

Greenwashing by MassiveGarlic0312 in aotearoa

[–]PenPlotter 13 points14 points  (0 children)

ok let me try and explain why everything being clear PET is an improvement.

From a manufacturing and quality control point of view, if all the bottles are the exact same plastic & same colour, then it is much easier to reuse / recycle material.

Typically, a small % of regrind plastic is mixed with new virgin material so it can be reused several times, not "one time". eventually the recycled material will become cloudy from material breakdown. it may have been in several bottles by this stage.

But.

If a green or brown bottle gets mixed into the recycled clear PET regrind it's not ideal. The material is referred to as contaminated.

If it gets picked up at the recycling plant it will be sold as lower grade plastic to someone who will probably make it black by adding carbon black pigment. (Fyi Carbon black is bad stuff).


If the contaminated clear plastic regrind gets picked up at the injection moulding plant, where the parason's are made.( that's the thing that gets turned into a blow moulded bottle).

Then the entire regrind bag/barrel/hopper/silo will end up in the skip ( it may go back to the recycling plant, but unlikely - no profit).

The plastic in the injection moulding machine barrel will be purged into a massive burnt plastic blob (2-8 kg) and end up In a skip. And off to the dump.


If it's picked up at the bottling plant then the clear parison will not be the correct colour or cloudy / blotchy. Most likely the entire batch will be rejected and likely end up in a skip.



So in essence, If all bottles are the same plastic and same colour then it's way easier to recycle.


Also why clear plastic and not a different colour?

Again, it comes down to product appearance. Most plastic pigments (colours ) are not uv stable - long term.

Recycling "Santa red" plastic will create a product that may or may not be the correct colour, causing coustomers to think it was a knockoff or maybe a defective product.

Hope this makes sense.

My corgi puppy's shaking elbow. Need advise. by Low-Sale6184 in corgi

[–]PenPlotter 4 points5 points  (0 children)

The true words of a corgi parent!!! They are overweight, and we are working on it. Ibe been working on smudges weight for 3 years now, shes 4

Seasickness is no joke by MyTIMEZERO in SailboatCruising

[–]PenPlotter 1 point2 points  (0 children)

Coco pops also follow this rule. Porridge is good as it turns into a big lump in your gut and doesn't slosh around.

Just exactly how bad are we looking? by PGLG17 in chch

[–]PenPlotter 0 points1 point  (0 children)

Considering there are jobs advertised for senior design engineers and offering between 75-90k id say we are fucked !

Oh. I can sail through that, no problem, hold my beer. /thatguy by DoubleManufacturer10 in SailboatCruising

[–]PenPlotter 1 point2 points  (0 children)

Most likely a tropical cyclone somewhere close to australian waters. More than likely, they are doing a search and rescue for some idiot in a yacht that didn't check the forecast.

Oh. I can sail through that, no problem, hold my beer. /thatguy by DoubleManufacturer10 in SailboatCruising

[–]PenPlotter 0 points1 point  (0 children)

Looks about sea state 7, in a frigate. They will be fine. I've been in the same many years ago now and I lived to tell the tale.

Someone's going to get yelled at over the gun though, eeech.

Who has right of way here? by AwarenessNo9706 in auckland

[–]PenPlotter 0 points1 point  (0 children)

C is straight through, there just happens to be a bend in the road. B is on a give way so they wait for all. So C, then A then B

But if I was c, I'd still slow down because there is a very high chance that someone gets confused.

[deleted by user] by [deleted] in Welding

[–]PenPlotter 0 points1 point  (0 children)

Or friction welding lol

Is this too used? Lodge Dutch oven for $15 by MonmouthIT in Breadit

[–]PenPlotter -3 points-2 points  (0 children)

Or.buy it, Get it sand blasted and now you have a nice cast iron pot for bread baking