Limiting the number of times a file can be reused.

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jdaley
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Limiting the number of times a file can be reused.

Post by jdaley »

I started this question in the ' introduce yourself ' area, and it has grown.Can the use of a purchased 'file' be limited?
I wish to purchase a 'file' from a seller in the USA for its use on a laser cutter, because the item created cannot be freighted to Australia.
I wish to pay him a fee for the use of the file once.
But I am interested to hear if there is a process whereby I can only cut one item from the file.
Thus protecting the sellers rights.
I have a situation where a seller is happy to sell me a file.
I want to see if he or others can be protected on continual reproduction?
Apparently a DRM system may work.
What is a typical DRM application that can be used to manage access to digital content?

Vitrium DRM is Digital Rights management software used by publishers to control access to the documents and other digital content like ebooks, reports and whitepapers. It allows publishers to share documents with the authorized users while preventing, copying, printing, sharing and forwarding.
Would it work with plasma cutter files?
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Re: Limiting the number of times a file can be reused.

Post by weldguy »

I don’t see how this is possible. Once the g code is generated one can cut as many as they like without revisiting the original file. All you can do is be honest, know that others may not be and forget about it.
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Re: Limiting the number of times a file can be reused.

Post by Joe Jones »

John Wick is a fictional character. Liam Neeson is an ACTOR. NO ONE is going to fight for you.

In an amoral society where people live by the rule, "If I can STEAL it, why should I PAY for it?" there are NO protections.

Even PATENTS are only as effective as the manufacturer's ability to pay high priced attorneys to go after people who violate them. The Chinese violate Patents all the time, and they just don't CARE. Who among you is going to fly over to China, and find an attorney who will go after a Chinese Communist Party Corporation for a patent infringement, when that attorney's whole family will most certainly be executed for the effort?

We live in a world where you make a widget, sell as many of them as you can until some A-hole rips you off, and then you make a different widget. That is just a fact of life.

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Re: Limiting the number of times a file can be reused.

Post by Joe Jones »

weldguy wrote: Sat Nov 02, 2024 7:54 pm I don’t see how this is possible. Once the g code is generated one can cut as many as they like without revisiting the original file. All you can do is be honest, know that others may not be and forget about it.
They don't forget. They just don't CARE.

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Re: Limiting the number of times a file can be reused.

Post by Joe Jones »

jdaley wrote: Sat Nov 02, 2024 7:15 pm
Vitrium DRM is Digital Rights management software used by publishers to control access to the documents and other digital content like ebooks, reports and whitepapers. It allows publishers to share documents with the authorized users while preventing, copying, printing, sharing and forwarding.
Now that right there is just plain FUNNY!

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Re: Limiting the number of times a file can be reused.

Post by adbuch »

adbuch wrote: Thu Oct 31, 2024 5:51 pm
jdaley wrote: Thu Oct 31, 2024 8:19 am Contrary to popular opinion, the manufacturer is happy to send me the file, I want to ensure he gets a fee.
That is what the topic is just about,' how to allow ' single use of the file, not take the seller to the cleaners.
It may be useful for other sellers, with other product.
Then very simple - buy the file, use it once, and delete it from your computer. If you are paying a shop to cut make these for you - then you will need to rely on the integrity and honesty of that shop to delete the file after a single use.

David
OItherwise - what weldguy said. If you are really that worried about it, then just don't use the manufacturer's file and draw it up yourself. This is a pretty simple design - just the three hooks/claws with the center connection piece to act as pivots for the claws and a location to attach a lifting hook.
rock claw 1.jpg





As I said previously - "I think this is something that would be pretty easy to draw up. The question is - what material do you plan to cut the tongs from, and will you need it to be heat treated? I could probably draw this up from looking at the photo and with some input from you on the actual size you need."

Also - there are many versions of this sort of "rock grapple/lifting tongs". Take a look at the link below to get some ideas.


https://www.google.com/search?client=fi ... 86&dpr=0.9
rock tongs 1.jpg
rock tongs 2.jpg
rock tongs 3.jpg
I also believe that you mentioned previously that you only need to lift several hundred pounds. So the one that you build will not necessarily need to be as beefy/heavy duty as many of the ones offered for sale.

There is also a youtube video showing a diy version - different configuration - but the same basic idea.



If you draw one up yourself (or have one of us do it for you) then it would not necessarily be exactly like the "Rock Claw" design you are considering, but perform the same function - and you won't need to worry about protecting manufacturer's design.

David

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Re: Limiting the number of times a file can be reused.

Post by adbuch »

weldguy wrote: Sat Nov 02, 2024 7:54 pm I don’t see how this is possible. Once the g code is generated one can cut as many as they like without revisiting the original file. All you can do is be honest, know that others may not be and forget about it.
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Re: Limiting the number of times a file can be reused.

Post by adbuch »

jdaley - Here is an example of a rock lifting tong similar to some of those shown above. The overall shape of the parts, dimensions, etc. can be easily modified to suit your particular requirements. Things like the shape of the arms, number of arms, overall opening between hooks when fully open, etc.If you let me know what particular dimension you need, I will modify it and provide you with a set of drawings you can use to cut your parts.

David
Rock Lifting Tongs flat pattern.jpg
Rock Lifting Tongs flat pattern 1.jpg
Rock Lifting Tongs flat pattern 2.jpg

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Re: Limiting the number of times a file can be reused.

Post by jdaley »

Thanks, I will follow up John
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Re: Limiting the number of times a file can be reused.

Post by adbuch »

jdaley wrote: Sun Nov 03, 2024 5:10 pm Thanks, I will follow up John
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Re: Limiting the number of times a file can be reused.

Post by jdaley »

I am recovering from a broken back and in the future move and load rocks etc about 1ft cubed.
i wonder if 1/2 material would work?
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Re: Limiting the number of times a file can be reused.

Post by adbuch »

Rock Lifting Tongs flat pattern 3.jpg

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Re: Limiting the number of times a file can be reused.

Post by adbuch »

jdaley wrote: Sun Nov 03, 2024 5:21 pm I am recovering from a broken back and in the future move and load rocks etc about 1ft cubed.
i wonder if 1/2 material would work?
How heavy is your load of rocks, and is it a single rock or multiple rocks you have put into some sort of bag or container?
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Re: Limiting the number of times a file can be reused.

Post by adbuch »

jdaley wrote: Sun Nov 03, 2024 5:21 pm I am recovering from a broken back and in the future move and load rocks etc about 1ft cubed.
i wonder if 1/2 material would work?
Yes - I think 1/2" thick material will work fine.
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Re: Limiting the number of times a file can be reused.

Post by SegoMan DeSigns »

This design looks like some bearing pullers I own, I would have a series of holes at the pivots so you can expand / shrink the span of the jaws for different size rocks.
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Re: Limiting the number of times a file can be reused.

Post by adbuch »

SegoMan DeSigns wrote: Mon Nov 04, 2024 11:33 am This design looks like some bearing pullers I own, I would have a series of holes at the pivots so you can expand / shrink the span of the jaws for different size rocks.
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Re: Limiting the number of times a file can be reused.

Post by jdaley »

I expect to lift one rock at a time with dimensions of about 16 inches across,
It maybe waste concrete cut blocks or boulders
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Re: Limiting the number of times a file can be reused.

Post by adbuch »

jdaley wrote: Tue Nov 05, 2024 6:11 pm I expect to lift one rock at a time with dimensions of about 16 inches across,
It maybe waste concrete cut blocks or boulders
So how wide do you want the jaw opening when they are all the way open? Maybe 20 inches?
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Re: Limiting the number of times a file can be reused.

Post by adbuch »

Here it is scaled up for a larger opening. Maybe this is too big. I will let you decide.
David
lifting hook set max open 1.jpg
lifting hook set max open.jpg
lifting hook set min closed.jpg

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Re: Limiting the number of times a file can be reused.

Post by plasmanewbie »

Super cool David! Fusion 360?
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Re: Limiting the number of times a file can be reused.

Post by adbuch »

plasmanewbie wrote: Wed Nov 06, 2024 11:08 am Super cool David! Fusion 360?
Yes - Fusion 360.
David
F360.jpg

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Re: Limiting the number of times a file can be reused.

Post by adbuch »

jdaley wrote: Tue Nov 05, 2024 6:11 pm I expect to lift one rock at a time with dimensions of about 16 inches across,
It maybe waste concrete cut blocks or boulders
jdaley - we have not heard back from you yet. Did you decide to go ahead and get the plans from the manufacturer or are you still entertaining the idea of coming up with your own design to your specifications? Let us know - we are here to help.

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Re: Limiting the number of times a file can be reused.

Post by acourtjester »

On a program I watch they lifted a large rock with chains, they used 3 or 4 from top to bottom. Then used a chain around the bottom to link the side chains together. That stopped the side chins from slipping by holding them in a small loop below the rock. I think that would be much more flexible to the rock shape.
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Re: Limiting the number of times a file can be reused.

Post by adbuch »

acourtjester wrote: Thu Nov 21, 2024 10:01 am On a program I watch they lifted a large rock with chains, they used 3 or 4 from top to bottom. Then used a chain around the bottom to link the side chains together. That stopped the side chins from slipping by holding them in a small loop below the rock. I think that would be much more flexible to the rock shape.
Tom - that's a great idea! I have had no response from the OP about the lifting grapple - perhaps he has lost interest.

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Re: Limiting the number of times a file can be reused.

Post by acourtjester »

Many ride off into the Sunset, never to be heard from again. :Sad :HaHa :HaHa
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