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Reason Nov 16, 2007, 03:55am EST Report Abuse
I have an egg shaped unit that is comprised of two halves. They are tightly compression-fitted with the seam dividing the unit latitudinally. I need to get the two halves apart. Think plastic easter egg with teh goodies inside..

The seam is too small to pry apart with a screwdriver, which would probably just break the plastic anyway. I cannot get enough grip with my fingers to get the halves apart. Pliers will work, but they will gouge the surface of the unit, which is not acceptable.

I've tried cushioning the pliers with a rag: it slips. I've tried cushioning it with two or three rounds of duct tape: it slips less, but tears. I have access to a vise, but it will crack the unit if I apply enough pressure to hold it.

Ideas, suggestions?


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Sander Sassen Nov 16, 2007, 06:08am EST Report Abuse
>> Re: Engineering type question
Yeah, use candle wax and cloth, just drip the wax on the cloth, then heat with a hairdryer until it melts, then apply a cloth to both halves of the egg shaped unit. This will bond to the surface and give you a far better grip. Candle wax can be removed again later with the hairdryer and piece of clean cloth or tissue, if needed use a light solvent or soap to remove any remaining candle wax residu.

Cheers,

Sander Sassen
Editor in Chief - Hardware Analysis
ssassen@hardwareanalysis.com
Dublin_Gunner Nov 16, 2007, 06:56am EST Report Abuse
>> Re: Engineering type question
Could you use something like a blade to slip between the two halves, running it around the circumference of the object to gently spread the halves apart, then use something larger when you have enough space?

Lancool PC K62
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4GB DDR2-800
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8o8 Nov 16, 2007, 07:54am EST Report Abuse
>> Re: Engineering type question
spray some wd40 on that bad boy ... or if the thing is tight put spit .. ohh no wait that saying is if no fit put spit lol if you know wat i mean lol..ohh and if you do use the razor blade tip as mentioned above make sure you use saftey glasses as the tip of the razor blade may break off and fly off somewhere.. happend to me at work

cpu-intel core i7 2600k oc 4.5ghz 1.28v
cpu cooler- corsair h50
mobo-asus sabertooth p67
ram-some generic kingston lol
psu corsair 600watt
video card- pny gtx460
case- thermaltake v9
varun rao Nov 16, 2007, 09:31am EST Report Abuse
>> Re: Engineering type question
first question, is it fused along the seam?.... or is it held together by clips on the inside?.
If its clips , then the best way is to take a credit card place it in the seam twist it gently and simultaneosly apply an inward thrust, once it separates the 2 halves, run the card along the seam, the remaining clips will automatically give way.
This is how smart phones and pda's are opened. This is how I opened my xda 2 mini. IT has a similar design.

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Reason Nov 16, 2007, 02:47pm EST Report Abuse
>> Re: Engineering type question
Thanks for all the suggestions. Regarding a razor, I tried it with a knife but no luck. A credit card is too thick to get it started, but if I can get it slightly cracked open it might be good to have the softer plastic so I don't damage the unit. I'll try the wax after I get home tonight.

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varun rao Nov 16, 2007, 02:53pm EST Report Abuse
>> Re: Engineering type question
dont worry about that, there is NO gap in case of my PDA, but if push the card towards the seam it will eventually part it.

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john albrich Nov 17, 2007, 12:48pm EST Report Abuse
>> Re: Engineering type question
If it's held together by friction only (no clips) try imposing temperature changes. It's possible simply running under hot water will expand the outer edge enough to release the inside edge.

If not, you might try temperature differentials on the two halves: warm on outer edge half, and cold on inner-edge half.

Josh Nov 20, 2007, 12:51am EST Report Abuse
>> Re: Engineering type question
Yeah, I was just going to say... try freezing it, and see what happens. It should loosen the joint slightly.

Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.
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Reason Nov 20, 2007, 01:21am EST Report Abuse
>> Re: Engineering type question
I thought that was a great idea. Unfortunately, once I bring it out of the freezer, enough condensation forms that I have even less grip on it, and I still need some to get it apart. I might try just wrapping a whole bunch of rounds of duct tape on it, see if that will cushion it enough that it won't mess up the surface.

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8o8 Nov 20, 2007, 05:37am EST Report Abuse
>> Re: Engineering type question
if you have or anyone that you know have a orbital sander us the sand paper for that.. sandpaper on one side and sticky stuff on another u can cut umm to size and stick umm on the egg and youll have some grip with the sand paper side . lol dunno itll work though

cpu-intel core i7 2600k oc 4.5ghz 1.28v
cpu cooler- corsair h50
mobo-asus sabertooth p67
ram-some generic kingston lol
psu corsair 600watt
video card- pny gtx460
case- thermaltake v9
Beavis Khan Nov 20, 2007, 09:21am EST Report Abuse
>> Re: Engineering type question
How about a rotary tool/Dremel with cutting wheel? :) Or does it need to go back together again at some point (without super glue)?

____
"For every complex problem, there is a solution that is simple, neat, and wrong."

- H.L. Mencken
Reason Nov 20, 2007, 01:02pm EST Report Abuse
>> Re: Engineering type question
Yeah, it's gotta go back together.

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Dr. Peaceful Nov 20, 2007, 05:46pm EST Report Abuse
>> Re: Engineering type question
Reason said:
I have an egg shaped unit that is comprised of two halves. They are tightly compression-fitted with the seam dividing the unit latitudinally. I need to get the two halves apart. Think plastic easter egg with teh goodies inside..

The seam is too small to pry apart with a screwdriver, which would probably just break the plastic anyway. I cannot get enough grip with my fingers to get the halves apart. Pliers will work, but they will gouge the surface of the unit, which is not acceptable.

I've tried cushioning the pliers with a rag: it slips. I've tried cushioning it with two or three rounds of duct tape: it slips less, but tears. I have access to a vise, but it will crack the unit if I apply enough pressure to hold it.

Ideas, suggestions?

Grip on an egg shape device without breaking or scratching it? Try suction cups!

Find two suction cups (each with a hook on one end ) that can be attach securely on the "north pole" and "south pole" of the egg. Pull on the hooks in opposite directions, hopefully the two halves will come apart, or at least increase the width of the latitudinal seam.

Hope that will work. :)

Reason Nov 20, 2007, 06:30pm EST Report Abuse
>> Re: Engineering type question
Well, I was just working on it. Tried wrapping a lot of duct tape around it, same result as before. Tried putting duct tape on the pliers, that didn't work and I missed a spot and put a big gouge in the surface. After that I said screw it and used the pliers bare, and that got it apart, albeit with surface damage. It was pretty tough to crack, too; my tape idea would never have worked. The suction cups are good thinking but one of the ends is such that a suction cup wouldn't fit. So, I got it open, and the problem that I had suspected, was not the problem I encountered, heh. Not fixable. Oh well. Thanks for all the suggestions.

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john albrich Nov 20, 2007, 11:51pm EST Report Abuse
>> Re: Engineering type question
So, was this an engineering class exercise or was there just panty-hose inside?

Reason Nov 21, 2007, 11:27am EST Report Abuse
>> Re: Engineering type question
I thought a contact had come loose, but it turns out the motor had burnt out. And that's all I'm saying. :)

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FordGT90Concept Nov 21, 2007, 11:33am EST Report Abuse
>> Re: Engineering type question
Ooo, top-secret. I'm intrigued.

FordGT90Concept puts his ear against the door in hopes of unmasking the devious plan. :_)

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Dublin_Gunner Nov 21, 2007, 11:37am EST Report Abuse
>> Re: Engineering type question
sounds stimulating :P

Lancool PC K62
Phenom II x3 @ 3.5Ghz
4GB DDR2-800
ASUS GTX570 DirectCU II
Max Lindholm Nov 28, 2007, 02:56pm EST Report Abuse
>> Re: Engineering type question
What is a Magic Bullet, Alex? ;)

Sander Sassen Nov 28, 2007, 03:51pm EST Report Abuse
>> Re: Engineering type question
Yeah, me thinks it was one of those egg shaped things some girls like to play with anally, hence he came to the right place, here at HardwareANALysis :)

Cheers,

Sander Sassen
Editor in Chief - Hardware Analysis
ssassen@hardwareanalysis.com

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