Joined: 15 Sep 2005
Posts: 327
Location: The other side of The Wall...Melbourne
They're large orange handled kitchen scissors from IKEA. Are those good enough to cut it? _________________ It seemed like a good idea on paper...
Sun Dec 04, 2005 2:23 pm
dyrodium Experienced Roboteer
Joined: 24 Aug 2004
Posts: 6476
Location: Sydney
You can tell the difference when you drill it... polycarb will cut easily and smoothly, but most other common plastics like that will crack around the drill hole (maybe further) and will produce fine chunks or squarf made from little bits of the original plastic. _________________ ( •_•)
Joined: 30 Aug 2005
Posts: 2729
Location: Gold Coast
Sorry guys, I've been busy.
If its 3mm thick and you can cut it with sissors it ain't polycarb. I tried it the first time I brought polycarb 2 years ago and I snapped the sissors. I was cutting 1mm polycarb today with sissors and even that required some force.
And what do you mean by bending? If you are refering to putting a crease into the plastic then you will need a vice to do that with 3mm polycarb. Or a very long, narrow strip of the plastic that is shaped like a ruler.
What you have sounds very soft. It could be used for expendable armour, but I wouldn't use it for structural components.
I know, heat it up over the oven. If it bubbles before it gets floppy its polycarb.
Sun Dec 04, 2005 9:45 pm
Damien (not Damian)
Joined: 15 Sep 2005
Posts: 327
Location: The other side of The Wall...Melbourne
I tried bending it and it only cracks when you bend it the other way. I pounded it with a hammer but it only dented. It didn't crack when it was drilled. When I heated it over the oven, it bubbled. I think it's less then 3mm lexan now. _________________ It seemed like a good idea on paper...
Fri Dec 16, 2005 10:18 am
Daniel Experienced Roboteer
Joined: 30 Aug 2005
Posts: 2729
Location: Gold Coast
It cracked when it bent? Did the crack appaer along the entire length all at once or did the crack slowly move accross as you bent it further?
Fri Dec 16, 2005 10:38 am
Damien (not Damian)
Joined: 15 Sep 2005
Posts: 327
Location: The other side of The Wall...Melbourne
I started from the middle, then it slowly went to the left and right. You need to bend it in half, then bend it in half again the other way. _________________ It seemed like a good idea on paper...
Sat Dec 17, 2005 7:06 am
Daniel Experienced Roboteer
Joined: 30 Aug 2005
Posts: 2729
Location: Gold Coast
Ok, I won't say it is polycarb, but I'll give it an 80% chance that it is. That way I can be wrong.
Use it for armour. When you attach it do it in a way that will allow the armour to flex and make sure there is an air gap behind it so it won't flex into any thing. And follow the rest of the polycarb rules I have posted in this thread.
Sat Dec 17, 2005 8:59 am
dyrodium Experienced Roboteer
Joined: 24 Aug 2004
Posts: 6476
Location: Sydney
quote:Originally posted by Daniel:
Ok, I won't say it is polycarb, but I'll give it an 80% chance that it is. That way I can be wrong.
Use it for armour. When you attach it do it in a way that will allow the armour to flex and make sure there is an air gap behind it so it won't flex into any thing. And follow the rest of the polycarb rules I have posted in this thread.
There's alot... and don't use gaffa it screws up the polycarb makes it brittle _________________ ( •_•)
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