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Author Topic: First home made bat - designed by artificial intelligence  (Read 27719 times)

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edge

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Re: First home made bat - designed by artificial intelligence
« Reply #60 on: August 31, 2021, 06:35:39 AM »

Quite apart from the interesting read on the modelling, that last bat in particular looks fantastic - well done @marsbug !
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marsbug

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Re: First home made bat - designed by artificial intelligence
« Reply #61 on: September 10, 2021, 12:00:06 PM »

Hopefully not labouring a point here, but one reason I tried to simulate the bats I made was to be able to compare them quantitatively, to try to put numbers on how a bat 'feels'. I don't know if I've achieved that, but in the future I should be able to simulate any bat I can get the measurements of, so if anybody knows of any strange or interesting shaped bats then please do let me know. I'd love to try to figure how differently they perform.

In the meantime, I've seen variations of this image by Gray-Nichols in a few places over the years. It shows where the maximum edge and spine are, and also where the middle should be in each bat. I quite like it for being a quick way of comparing the different shapes.



So I combined the results for all 4 of the bats I made and put them in a single, similar sort of image. Again, the shaded region is just the area between the Centre of Percussion (COP) and the lowest vibration node that is relevant (node 2); this area is just one definition of the middle, and performance (however you measure it) would drop off gradually like in the GN image, rather than stop abruptly.



The first bat I made, which was based on an artificial intelligence design, is the Pathfinder on the right. It does have a noticeably lower middle than the others, which is reflected in how the pickup feels to me, but I would never be able to say by how much just through handling it.
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AJ2014

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Re: First home made bat - designed by artificial intelligence
« Reply #62 on: September 10, 2021, 12:26:44 PM »

Very nice and interesting!
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marsbug

Re: First home made bat - designed by artificial intelligence
« Reply #63 on: January 05, 2022, 09:18:01 PM »

This thread has wandered a fair bit away from the title, but I think it serves as a place for all the bats I've made. So hopefully it's ok to post another one in here.

This is the second-to-last design I want to test myself with: a shorter T20 blade. Full confession - it was inspired by the Blank Bats B20, even if the profile ended up quite different. The plan was to make the blade shorter, and also drop the shoulders to make a longer handle. So overall not too much shorter than usual.

It started with a grade 2 part-made from Hell 4 Leather again. One of the main reasons that I couldn't quite follow the design I wanted was that there had just been a bit too much wood already removed when I got it. Wouldn't be a problem for a normal bat, but for the intended short and fat one I had in mind, it meant that I had to scale it back a bit.



If you look about 3/4 of the way down the blade, you can see a bit of a knot. It worried me at the time as you can see how the pressing hadn't managed to push the face down there. It was probably raised by about 2-3 mm right across the face. More on that later.

Here's a shot of me planning the templates for shaping the edges and back. I found in this case the easiest thing to do was to do the design on the computer first, then print it out full-scale, cut out the things I needed, and use those to make better templates out of thin MDF. I actually got 2 part-mades at the same time - the other one is a (bad) work in progress. You can see how much I planned to chop off the toe of this one though.



Here's how much I took off the shoulders and toe initially. The shoulders needed a fair bit of extra shaping to get them down to what I wanted, but I was just being cautious with the jigsaw. Same went for the toe too, when I wanted to take off a bit more weight. For those interested, the removed parts didn't really save that much weight in the end: 2 shoulder pieces were 0.7 oz combined, toe piece was 0.6 oz. Was kind of hoping for more of a weight saving, but there we go.



Here are the dropped shoulders. I tried to make the bottom part of the handle a bit more oval, as it feels more comfortable to me, and you can see it's a bit skinnier there.



I didn't do any concaving at all on this, as I wanted it to have plenty of wood no matter where I mis-hit it!



And that knot. What a pain that was. As I tried to sand the face level, more and more of the knot revealed itself, and it was a bit nasty. Some real dark, dead wood in places, so I really spent a fair bit of time sanding as much of it away as possible. It's not ideal, but it's only for me.



Anyway, the final profile. It ended up being a little different to my planned design, just because the part-made didn't have enough wood in the edges or middle to get what I wanted. But I still quite like it, and can't wait to try it out in the nets soon.



Final measurements:
toe: 12 - 27 mm
edge: 37 mm
swell: 63 mm
shoulder: 16 mm
weight: 2 lbs 10.4 oz
blade length: 530 mm
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InternalTraining

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Re: First home made bat - designed by artificial intelligence
« Reply #64 on: January 05, 2022, 09:24:01 PM »

Looks great!

I need to revisit my batshaping experiments ...one day soon...hopefully. :)
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marsbug

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Re: First home made bat - designed by artificial intelligence
« Reply #65 on: January 05, 2022, 10:02:01 PM »

Looks great!

I need to revisit my batshaping experiments ...one day soon...hopefully. :)

Well I can totally recommend it as a calming and distracting hobby! Although not a cheap one. I am thinking of a final, old-fashioned Mjolnir type shape, but then it will be back to only computer models of shapes for me for a while!
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Jimbo

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Re: First home made bat - designed by artificial intelligence
« Reply #66 on: January 05, 2022, 11:16:44 PM »

Looks an absolute beast, would happily use that any day!
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marsbug

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Re: First home made bat - designed by artificial intelligence
« Reply #67 on: March 11, 2022, 10:44:04 AM »

Not a new bat as such, but an updated one. I thought that there was no point in having a bat shape that I didn't like and would never actually use. So I attacked my bat from this post (http://custombats.co.uk/cbforum/index.php?topic=48259.msg785936#msg785936) with a spokeshave, with the aim of making it look a bit better and maybe losing a little weight.

I managed to take the weight down from 2 lbs 10.8 oz to 2 lbs 8.2 oz, by removing the weirdness from the toe, and reducing the maximum edge size from 35 to 32 mm. There's no concaving at all in the lower half, and maybe 1-2 mm in the upper half.

I MUCH prefer the new shape! And I gave the stickers a rebrand, which helps it feel new.













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Jimbo

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Re: First home made bat - designed by artificial intelligence
« Reply #68 on: March 11, 2022, 11:58:40 AM »

As much as I loved the weird precursor, that is a lovely profile. Old school with a little modern twist on it, I'd be happy with that any day.
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Bungle

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Re: First home made bat - designed by artificial intelligence
« Reply #69 on: March 11, 2022, 12:49:04 PM »

Fantastic pictures, love the one of it looking down the back of the bat. Great work
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marsbug

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Re: First home made bat - designed by artificial intelligence
« Reply #70 on: March 11, 2022, 01:06:32 PM »

As much as I loved the weird precursor, that is a lovely profile. Old school with a little modern twist on it, I'd be happy with that any day.

Ah it's nice that you say that, as I was looking at my old Mjolnir as a guide, but I just couldn't get close to its profile because of what I'd already done before. Maybe next time...
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Wozaboxa

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Re: First home made bat - designed by artificial intelligence
« Reply #71 on: March 11, 2022, 02:39:53 PM »

This Thread is absolutely mind boggling both interesting and confusing! but the bats look very good, big fan of the branding especially the last one, very clean!
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InternalTraining

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Re: First home made bat - designed by artificial intelligence
« Reply #72 on: March 11, 2022, 03:04:47 PM »

I managed to take the weight down from 2 lbs 10.8 oz to 2 lbs 8.2 oz, by removing the weirdness from the toe, and reducing the maximum edge size from 35 to 32 mm. There's no concaving at all in the lower half, and maybe 1-2 mm in the upper half.

So, you removed two ounces without reducing meat in the sweet spot. Has the ping quality (I wish there was a way to measure it) changed/diminished?
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marsbug

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Re: First home made bat - designed by artificial intelligence
« Reply #73 on: March 11, 2022, 05:37:44 PM »

So, you removed two ounces without reducing meat in the sweet spot. Has the ping quality (I wish there was a way to measure it) changed/diminished?

Not that I can tell, but I am probably not a sensitive enough test to be sure! Most of that weight was down near the toe, which would feel pretty bad to hit with anyway. But I did take some weight off the edges around the middle (but keeping the spine high), so I guess the sweet spot is narrower in width now, although similar in length along the bat.
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marsbug

Re: First home made bat - designed by artificial intelligence
« Reply #74 on: May 31, 2022, 05:37:50 PM »

I found an exuse to make another bat! This one is to be given away in a raffle for my club's anniversary, and I think I've accidentally made a @jonny77 profile!

Again, part-made from H4L, this time a Grade 1. As it'll be for somebody else, I thought I'd make it as big as possible! Very noticeable duckbill toe, comes in at 2 lbs 10 before grip and stickers. I'm hoping it should be a good 'un for someone.









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