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Mass - Velocity and Kinetic Energy Curves

29 August 2010

13 Comments

Posted by ZDP-189

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I have measured and plotted some mass-velocity and mass-kinetic energy curves for my standard bands.

Image reduced in size

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Can bands be too thin?

25 August 2010

8 Comments

Posted by ZDP-189

I've been having problems with an experimental bandset of Thera-band Black. Essentially they are the same formula as my die cut doubled Thera-band Gold bands, but in the thinner Thera-band Black and with a tiny 50mm x 6mm pouch.

I want them as a fast bandet for my little (38lb) daughter. She'll be shooting 6mm steel ball and I've...

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Bandsets - Balancing performance with longevity

22 August 2010

9 Comments

Posted by ZDP-189

My first homemade bands were crude affairs. They shot lead balls and I loved them. However, before long. I went off on a quest for the ultimate in velocity and energy. I made some extreme bandsets that pushed the envelope in every direction: lighter, faster, thinner, more tapered. I spent a great deal of time experimenting, designing and...

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How does draw strength affect accuracy?

08 August 2010

9 Comments

Posted by ZDP-189

I've known for a while that the heavier I have to pull, the less accurate and consistent my shots are. I've been looking for ways to describe or quantify that, because I want to establish my optimum draw strength for accuracy. By using heavier bands and heavier ammo I should shoot flatter and straighter, but after a certain point,...

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Slingshots for Trade

02 August 2010

8 Comments

Posted by ZDP-189

I often get asked if I would sell my slingshots. Well, the short answer is no. Forum moderators aren't meant to sell slingshots especially several made to the same design, hence I don't sell slingshots but I can trade.

Below are some examples of the T1 (Target model #1) I've been making in a phenolic resin similar to paper...

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Band cutting

31 July 2010

5 Comments

Posted by ZDP-189

I've struggled with band cutting. I currently use a rotary cutter and steel rule on a cutting board and I still have trouble making an accurate cut and getting bands the same width. To make things worse, my latest designs involve not just straights or tapers, but complex curves.

I think I have found a solution, though. I once had some...

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Youtube Channel

11 July 2010

8 Comments

Posted by ZDP-189

I've just signed up a Youtube account (ZDP189HK...

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Moralities of copying

07 July 2010

11 Comments

Posted by ZDP-189

We've philosophised a lot about this the morals of this topic in the knife-making community. Just like slingshots, it's a basic technology and most designs have been made similarly by someone at some time in the past and similarly, people are trying to make a a recognisable product and to make some income from it.

There's a whole...

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Chinese-style shooting

06 June 2010

5 Comments

Posted by ZDP-189

Yesterday danny...

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Compromise and balance

31 May 2010

3 Comments

Posted by ZDP-189

I've been thinking about how to design the best bandsets for my needs. I'm a target shooter who wants to take a similar bandset out to hunt. I like a chin draw. What works for me might not work for other people, because we're all different. A person's best bandset depends on many factors such as how strong you are, whether you need...

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