burning-ice

Quote

The spirals would actually provide channels through which the air could escape.
Rifled barrels do absolutely nothing to improve range or accuracy of nerf darts. The trajectories are too different.

Upon review, yes they would. On another hand, use a candle for the flame as it requires no hands to operate past the lighting.

'Draconis', on 19 Feb 2013 - 01:23 AM, said:

Yes, and one which is calibrated to Celsius, apparently.

If you are in Canada, or outside the US, or simple conversion can be done. I do see this method of brass as a way to do "rifling." Instead of stretching the PETG, twist itsto it has spirals, yes this would be a sealing problem, maybe even a crooked barrel. If someone finds out a way to do this with out ruining the integrity of an air seal, bravo!
EDIT: Twisting the PETG whilst pulling it apart could possibly result in better air seal and a "rifled" barrel!

'Daniel Beaver', on 18 Feb 2013 - 10:00 PM, said:

I should have made my point more clear:

An algorithmic sorting method like Reddit is good for bringing "good but shallow" content to the top. Because it's really quick and easy to upvote something, it means that content which is easily and quickly digestible has better survival characteristics than content which is in-depth. There's a reason funny cat pictures dominate the front page of reddit: it's very easy to look at it, chuckle, click upvote, and move on to the next article. In the time that it would take someone to read through a long, profound, fantastic article or post, the other guy could have upvoted 50 funny cat pictures. From an algorithmic point of view, this means that the dude upvoting funny cat pictures has 50 times the voting influence as the guy who is reading through that long article, and so the predictable thing happens: the shallow and entertaining content has much more buoyancy. These sorts of unbounded algorithmic sorting systems will always fall prey to this least common denominator effect.

My several years of Reddit addiction have reinforced my opinion that having small communities and human curators is ultimately a more effective solution for uncovering and presenting "good and in-depth" content. That's why I've always supported Nerfhaven's strong focus on encouraging quality content, and why we are harsh to new members who are not putting effort and intelligence into their contributions.

Ah, I see now. Thanks for clearing this up.

'Draconis', on 18 Feb 2013 - 11:14 PM, said:

No, it is not. I was attempting to use a similar method when attempting to create my own sleeves for the rockets. No matter how slow and even I heated the plastic (I was using PETE pop bottles), they would come out all mottled and distorted when they shrank. This seems to be partially due to the water which is trapped in the polymer matrix (PETx polymers are hygroscopic, and thus absorb a small amount of water), because it does not heat at the same rate and then wants to evaporate out, which in turn cools that area slightly. This is a problem for reuse, but not really during the original manufacturing process because the new, hot plastic bottle blanks have not had time to absorb any water yet.

All that said, you are better off using a different material and shoving it inside the PETG.

Adding to that, I know that when people go to mold polycarbonate and other plastics, they bake them at somewhere around 120 degrees celsius to remove most water. Not sure if this link is approved but, Heat-treating Polycarbonate. This is an option but is not practical unless you can find a spare oven.

'chavez_guy', on 18 Feb 2013 - 9:09 PM, said:

I think that is the complete opposite of what he is saying. Beaver is arguing that the upvote/downvote system is actually detrimental to finding good content.
Plus, the system we have here is perfectly fine in my opinion. If it follows the rules and shares new information, then the mods and admins leave it alone. If it doesn't, it gets locked. Seems fine to me.

Err, yes, it is. I misinterpreted what he said, but I do think that Reddit has power. It's just at the point where a 12 year old can say "MODDED NITEFINDER," and all it was is him going in with pliers and removing the peg.