3D printed throw weights

[Whisper]

I would agree with that, it looks interesting, but not at that price. I would want to see it below $10 before I would be interested in buying it. I realize manufacturing with a 3D printer is expensive, it may be necessary to keep margins razor thin until there are sufficient sales to justify having a mold made and making them that way.

When a design costs close to or more to make then what you could sell it for the whole thing becomes obviously untenable to produce. I’m sure there’s a magic formula for what that number is I just don’t know what it is myself. I’m financing my prints and parts myself but it’s not a bottomless pit, far from it actually. I’m on a retirees pension. Another reason why I appreciate the input I’m getting here. maybe help me from going down some deadends

 

[RopeShield]

Throw wts need to go both ways. Quickee creates a larger area to get stuck when going down or up . Besides that We tried plastics . They break too easily. Wish them luck. That was our starting point too. We went full hard metal in the end with soft dampener s add on.

 

[Bart_]

I was wondering if the quickee would pique your interest as a de-optomised version of the treepeedo nose cone. Mine is a snug fit on tachyon spliced eye with barely enough metal shell to stay strong, and it still has it's bad moments pulling a rope up sometimes.


Has anyone used a quickee?

 

[Daniel]

 

[Bart_]

Does that throw bag, before it burst, seem like it was packed fairly full i.e. not floppy to the feel? I noticed some time ago that the throw bags I could find always seemed under filled. Maybe that's a design feature to lower the stress on the sewn seams during an impact. More like a bean bag. I thought it was a quality problem at the time.

Just a thought. Could be wrong.

 

[RopeShield]

How is an interior rubber, latex bladder suppose to hold up to the impacts, interior abrasion between bb's? Are you taking a chance of being exposed to Plumbum ie Lead?

 

[surveyor]

I've experimented with a brass plumb bob as a throw weight.....
I'm thinking multiple coats of a liquid rubber are needed.

Treezy makes some industrial looking throwbags.

 

[Tom Dunlap]

My Harrison Rockets have never oozed grey lead slime or dust. None have ever broken either. They rarely bounce or ricochet unless they hit something in the lower half of their trajectory.

When Sophia and Tom were inventing the throwbag they made many sizes and loads of shot then dropped them off parking garages. They found some ideal loads that eliminated seam blowout. All of their original bags were more baggy or loose than packed tight like In Daniel’s video

 

[RopeShield]

Most rubbers are too grippy and plumbob is getting wedged. Same with bags.
Respect your choice but handling pb is wrong no matter how you wrap it, it will fail. Ask a sharp edge rock. Ask other previously lead use industry. Paint, plumb, fish hunt etc

 

[Jehinten]

Personally I only seek out non lead shot. There is a void at the moment. Wesspur changed their bags from lead to steel, and now back to lead.
The difference didn’t change in functionality nor did the size of bag.
All bags eventually break, and then you spread well over half a pound of lead everywhere.

Bringing up an old thread. I've been searching for a steel shot throw weight for a magnetic project. I'm finding conflicting data on any throw weights that I find online that claim steel shot, then in the product description it'll say lead shot.

Have you got any steel shot recommendations? I'm sure it's been brought up before and I'm running a search now, but I haven't found a source yet.

 

[evo]

Bringing up an old thread. I've been searching for a steel shot throw weight for a magnetic project. I'm finding conflicting data on any throw weights that I find online that claim steel shot, then in the product description it'll say lead shot.

Have you got any steel shot recommendations? I'm sure it's been brought up before and I'm running a search now, but I haven't found a source yet.

It's been a LONG time, but I have used BB's... not the cheapest. Our f-ed up ferry boats (botched engineering contract) didn't get the weight right, so now their hulls are half filled with steel shot.
Maybe look into sand/shot blasting?

Shot Blast Media

This high-quality shot blast media is made from non-recycled cleaned steel. It is ideal for concrete surface preparation to remove coatings and surface contaminants to prepare floors for polishing or new epoxy coatings.

www.jondon.com

 

[loltreestuff]

Throw wts need to go both ways. Quickee creates a larger area to get stuck when going down or up . Besides that We tried plastics . They break too easily. Wish them luck. That was our starting point too. We went full hard metal in the end with soft dampener s add on.

Just an update for everyone. I tried the quickee as the price has come down significantly. I've had good luck with it so far. The larger area seems more like a feature than a bug. It doesn't seem to get stuck in the real tight crotches like a standard bag would. Instead it doesn't go through them at all. So you can pull up on it real hard and get it to bounce around those tight crotches. Also, it doesn't seem like a plastic. It's like a very stiff rubber. And durability hasn't seemed like an issue so far. I've landed it hard on driveways a few times so far with no issues.