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cham-oo
#1 Posted : 08 October 2010 22:50:38

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Location: Uitenhage, South Africa
Hi all

Re the infamous Rib 15...

Has anyone else noticed that even in the latest guides, one can see the discrepancies mentioned?Laugh

Or am I seeing ghosts...

Surely this cannot be a mistake throughout all the kits?

Could this maybe be a feature of the ship that is being overlooked? (or maybe a glitch in the production line)LOL

What is the expert opinion?...

Regards
Jacques
secretreeve
#2 Posted : 08 October 2010 23:04:51

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im no expert but laser cutting still leaves alot to human error, clamps not being tight enough, faulty clamps, bad matrix's ect, the faulty ribs may have simply been someone not doing thier job properly.
One eye
#3 Posted : 09 October 2010 01:28:19

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I disagree.

Precision, means PRECISION. Laser cut is done by computers, not humans. If the machine is wrong, then the programmer is faulty. You put sh*t in, you get sh*t out.

My false keel is out on all three parts (front is 4.05mm thick, middle is 3.65mm, and the rear is 4.35mm thick). This caused havoc in fitting all the ribs, due to all the different false keel dimensions. This demonstrates a difference in the thickness of material used.

Has no one considered that if or when, you purchase the FULL kit, they will be cut from the same piece of ply. When you buy a full kit; the hull parts are 'laser cut' into one or two pieces of relevant ply.

By doing this piece meal version; my hull construction was sourced from 700+ different bits of plywood, which have a natural variance in thickness, and then tossed into a 'pool' which sends out different parts of the jigsaw to all parts of this country - at £5.99 per go.

Funny how rib 15 (more specifically 15A) seems to be causing the most problems.

I do not beleive that this is coincidence. There is an inherant flaw in the production process, which is being ignored/covered up.

Each to their own viewpoint. This is mine.

See ya. Glare Glare
secretreeve
#4 Posted : 09 October 2010 03:25:47

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One eye wrote:
I disagree.

Precision, means PRECISION. Laser cut is done by computers, not humans. If the machine is wrong, then the programmer is faulty. You put sh*t in, you get sh*t out.

My false keel is out on all three parts (front is 4.05mm thick, middle is 3.65mm, and the rear is 4.35mm thick). This caused havoc in fitting all the ribs, due to all the different false keel dimensions. This demonstrates a difference in the thickness of material used.

Has no one considered that if or when, you purchase the FULL kit, they will be cut from the same piece of ply. When you buy a full kit; the hull parts are 'laser cut' into one or two pieces of relevant ply.

By doing this piece meal version; my hull construction was sourced from 700+ different bits of plywood, which have a natural variance in thickness, and then tossed into a 'pool' which sends out different parts of the jigsaw to all parts of this country - at £5.99 per go.

Funny how rib 15 (more specifically 15A) seems to be causing the most problems.

I do not beleive that this is coincidence. There is an inherant flaw in the production process, which is being ignored/covered up.

Each to their own viewpoint. This is mine.

See ya. Glare Glare



couldnt agree more, and yes laser cut is done by computer but programmed by man leaving human error, materials, parts and soemthing else are all changed by humans, perhaps the people who designed it gave the programmer the wrong information and the ones that are fine are technicaly the faulty ones according to said information handed to programmer lol
jase
#5 Posted : 09 October 2010 10:11:17

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I buy a lot of laser cut parts for my job. the usual reason for an incorrect tolerance is an incorrect dimension put into the program. This can be done by the programmer or the designer who did the electronic drawings. having looked at the part there is a misshape in line with the gun deck it looks like the part is oversize but the correct shape. the make the part cost effective for manufacturing all the parts will have been produced at once. the volume dictates there will be variances in the tolerance of the ply consumed. basically inspection at the factory is not looking at dimensions just damage and that's how it came about we all got an oversize part.
“Whenever you find yourself on the side of the majority, it is time to pause and reflect.”
-Mark Twain
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