Cricket Bat Press...the design/ fabrication and testing
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mcgill123

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Re: Cricket Bat Press...the design/ fabrication and testing
« Reply #45 on: April 14, 2015, 11:44:03 PM »

This may seem a ridiculous request to those reading that are under the age of thirty, but, can someone please help to edit my last post so it has pound signs instead of £, thanks.
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WalkingWicket37

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Re: Cricket Bat Press...the design/ fabrication and testing
« Reply #46 on: April 15, 2015, 09:52:52 AM »

This may seem a ridiculous request to those reading that are under the age of thirty, but, can someone please help to edit my last post so it has pound signs instead of £, thanks.

I don't think you can mate, that's just a forum quirk  :)
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Bambooman

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Re: Cricket Bat Press...the design/ fabrication and testing
« Reply #47 on: April 15, 2015, 11:46:03 AM »

Hello James .
Would it be possible for you to video a cleft being pressed?
It's a very impressive job you have done.
I recall you saying you had an £800/£900 budget, did you come close to achieving this?.
If the funds were limitless, would you have been able to streamline you're design to enable it to become even more portable?.

Once I get a bit more proficient at it I'd love to video for you.
Budget wise, I'm afraid it was well over as well as time scales. The old adage 'estimate your price and double it' is more than apt here. My advice to anyone wanting a press 'BUY ONE' if you can.
Having said that I do have a press that I know every nut and bolt of which I'm sure will count for something.
I think making a press 'portable' would be possible but would depend on your definition of portable. I have already found that the limiting factor on my press is the motor. It is a 1.5kW 1400rpm single phase motor geared at about 6:1 and will stall if you try to press too hard (far too hard in reality - 5-6mm in one go but this was testing and experimentation) The mechanics of everything else are more than strong enough. However, with each pass of the cleft you need more force for the same amount of depth of compression because you are compacting the cleft each time - if that makes sense. Therefore, you still need to be able to achieve the same power of compression regardless.

mcgill123

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Re: Cricket Bat Press...the design/ fabrication and testing
« Reply #48 on: April 15, 2015, 04:12:27 PM »

Once I get a bit more proficient at it I'd love to video for you.
Budget wise, I'm afraid it was well over as well as time scales. The old adage 'estimate your price and double it' is more than apt here. My advice to anyone wanting a press 'BUY ONE' if you can.
Having said that I do have a press that I know every nut and bolt of which I'm sure will count for something.
I think making a press 'portable' would be possible but would depend on your definition of portable. I have already found that the limiting factor on my press is the motor. It is a 1.5kW 1400rpm single phase motor geared at about 6:1 and will stall if you try to press too hard (far too hard in reality - 5-6mm in one go but this was testing and experimentation) The mechanics of everything else are more than strong enough. However, with each pass of the cleft you need more force for the same amount of depth of compression because you are compacting the cleft each time - if that makes sense. Therefore, you still need to be able to achieve the same power of compression regardless.
That makes perfect sense, thanks for your reply.
There are factors to bear in mind here which you can not measure in a monetary sense.
You must feel a huge amount of pride in designing and seeing this through to its completion.
It really is impressive.
Sometimes you can start a task and get to a point where you wish you had never started, but to have the drive and gumption to see it through can be character building.
Great job .
« Last Edit: April 15, 2015, 06:04:15 PM by mcgill123 »
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Bambooman

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Re: Cricket Bat Press...the design/ fabrication and testing
« Reply #49 on: April 15, 2015, 04:48:12 PM »

That makes perfect sense, thanks for you reply.
There are factors to bear in mind here which you can not measure in a monetary sense.
You must feel a huge amount of pride in designing and seeing this through to its completion.
It really is impressive.
Sometimes you can start a task and get to a point where you wish you had never started, but to have the drive and gumption to see it through can be character building.
Great job .

Thanks for you comments, they really are very much appreciated. Patience/stubbornness, call it what you will, was certainly a requirement. That and a very understanding/supporting wife.

Six Sixes Cricket

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Re: Cricket Bat Press...the design/ fabrication and testing
« Reply #50 on: April 15, 2015, 06:39:10 PM »

Looks brilliant, well done 👍

Number 11

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Re: Cricket Bat Press...the design/ fabrication and testing
« Reply #51 on: April 23, 2015, 12:23:43 PM »

Been off the forum for a while and am just catching up. Well done with this, looks like it runs great.
Stalling the motor is not a good thing for the motor but does mean you're less likely to overpress a cleft.
If you're after more torque, you'll most likely have to hunt around for a 6 or 8 pole motor, probably 3 phase are more common. They run slower but have higher torque.
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Bambooman

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Re: Cricket Bat Press...the design/ fabrication and testing
« Reply #52 on: April 23, 2015, 12:39:11 PM »

Been off the forum for a while and am just catching up. Well done with this, looks like it runs great.
Stalling the motor is not a good thing for the motor but does mean you're less likely to overpress a cleft.
If you're after more torque, you'll most likely have to hunt around for a 6 or 8 pole motor, probably 3 phase are more common. They run slower but have higher torque.

Thanks! It's been pressing fine and has no problems at all with sensible use. The stall was when I wanted to see how far it would go which was about 6mm in one pass! Which was ridiculous obviously.
I only have single phase and the gearing was designed around the 1400 rpm  to give a 20 second pass which gives about 60Nm torque on the lead screw. Higher pole motors as you know will slow this down too much IMO.

RossViper

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Re: Cricket Bat Press...the design/ fabrication and testing
« Reply #53 on: April 23, 2015, 08:20:18 PM »

Great work there lads.

Noone had the idea of using springs and a wooden roller. If I had the space I would defo try one.

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Northern monkey

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Re: Cricket Bat Press...the design/ fabrication and testing
« Reply #54 on: November 26, 2016, 04:07:40 PM »

Oldish thread, but hey ho
Finally sorted an old lathe to convert into a press and have installed in my tiny shed today
Will post pics etc of the build as I go, for anyone interested

JB

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Re: Cricket Bat Press...the design/ fabrication and testing
« Reply #55 on: November 26, 2016, 05:57:35 PM »

Good stuff!! Look forward to seeing it progress 👍🏼
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simonmay5

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Re: Cricket Bat Press...the design/ fabrication and testing
« Reply #56 on: November 26, 2016, 07:11:23 PM »



Pictures of @Northern monkey press

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Northern monkey

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Re: Cricket Bat Press...the design/ fabrication and testing
« Reply #57 on: November 26, 2016, 07:13:16 PM »

Cheers Simon

The old boy, I got the lathe off, said it had come off a submarine !ha
« Last Edit: November 26, 2016, 07:16:19 PM by Northern monkey »
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springbok45

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Re: Cricket Bat Press...the design/ fabrication and testing
« Reply #58 on: November 26, 2016, 07:31:10 PM »

Cheers Simon

The old boy, I got the lathe off, said it had come off a submarine !ha

Why use a lathe? Is it just to drive a worm gear to move the press bed?
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simonmay5

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Re: Cricket Bat Press...the design/ fabrication and testing
« Reply #59 on: November 26, 2016, 07:35:28 PM »

Why use a lathe? Is it just to drive a worm gear to move the press bed?

Why not use the lathe frame theirs no right or wrong way is there
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