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About Deathly Hallows

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About Deathly Hallows
Simon Hallows
I have loved Robot Wars since series 1. Avid fan and always wanted to build a robot, had no money and no time back then. Now a bit older, wiser and it's time to live the dream and build a robot!
Hoping this could be a hobby. F1 fan & science geek
Yes - It's complicated
Proof of concept - done
Beetle "Evil K'Weevil" in detailed design phase
Feather concepts next


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Join Date
20th October 2017
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Recent Entries

Too many choices!

by Deathly Hallows on 2nd December 2017 at 10:57
I have been reading Ant threads recently.

There are too many choices. There are so many cool ants out there and they look cheap to make. They are definitely on my to do list. But I have to keep focused and finish a Beetle and a Feather as I originally planned.

I am ironing out the issues I had discovered in rendering the Beetle "Evil K'Weevil" in CAD. Initial design was over weight, with the original shape the surface area (so armour required) was too large,

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Is designing as much fun as battling?

by Deathly Hallows on 16th November 2017 at 22:31
I am really getting into the designing part of the sport.

Spent ages trawling websites like Robotshop,, technohotsonline, eBay and Amazon. As I am working on a beetle weight is critical. I am also getting to grips with OnShape. I am able to model most simple things that a vendor has a drawing for. Motors, hubs, wheels etc. The built in mass calculator also shows just how much I save by narrowing a plate from 2mm to 1.5mm or drilling out holes. This is making the exercise

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Getting into OnShape

by Deathly Hallows on 11th November 2017 at 21:24
I came across OnShape and really like the tool based on my limited experience.

Here is the website

For an expert this is probably really easy, but I am rather new to this so it's taking me a while to really be able to do very much. What I like is the structured approach, powerful tools, 3D rendering, materials built in, and access to massive set of pre-built objects.

So far I have only managed to make HDPE planes with slots cut or holes countersunk. But

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It's alive!

by Deathly Hallows on 10th November 2017 at 09:05
The wheels are fitted at least to the level I need now. M10 bolt padded out to ensure central and then washer and nut to clamp the wheel. It will do for my test bed.

Now I need to work on designs here are a few concepts I am playing with:

Code name: Evil K'Weevil
Weight: Beetle (could be scaled up)
Body: Flat
Drive: 2x2, any way up
Weapon: Core Cutter

Code name: Ali-grater
Weight: Feather
Body: Angled wedge to assist self

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Blinking Hell it's Crap - featuring Axle Faulty

by Deathly Hallows on 8th November 2017 at 23:29
Still no luck finding a way to use those wheels. So I have ordered replacements with a slimmer bore. The original ones I actually found a really solid way to fit an axle but the drills wouldn't open wide enough.

M12 threaded bolt bar, wrapped with some PTFE, nut and washer each side was so good! Fitted brilliant on the wheel and so solid, would have taken an elephant to stand on my bot to snap or bend them. I am keeping them and perhaps I will find a way around the issue (I saw

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