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Adjusting MDPC crimper?

post #1 of 9
Thread Starter 
As I was crimping some ATX pins last night I noticed the quality of the crimps had degraded. The rear wings are biting into the wire insulation, but one side is being extended downwards and even breaking in some cases. I'm using the good Molex pins, in fact these came from MDPC.

Disturbing since the crimper hasn't been used that much.

I'm hoping an adjustment will set it right. Anyone have any tips for adjustments? I'm in the process of making up a new 24 pin from scratch and really need this thing.
post #2 of 9
Thread Starter 
I found a pic Big Elf posted a while back and it looks exactly like what is happening.
So should I loosen one of the dies and move it forwards or backwards?
post #3 of 9
I imagine that the best thing is to email Nils. Since he is the one who calibrated it in the first place. If you haven't had it long, perhaps he has a suggestion.
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post #4 of 9
Thread Starter 
Perhaps you're right. I thought I had his email saved but apparently I don't.
I have to run to town but when I get back maybe I'll try some adjustments myself, it's not working like it is. I'll try loosening the dies, closing, then retightening and see what happens.
post #5 of 9
I found that adjusting the tool with it open worked best. The tolerances are extremely fine and you can't get enough adjustment with it closed. I adjust mine by moving the top die (the one that has the v bite) back towards the handle and the bottom die towards the front of the tool.

Use a good quality screwdriver as you need to screw the screws down tight otherwise it comes out of adjustment again quickly. Don't close it until the adjustments have been done and the screws are fully tight.

The first time you do close it after adjustment do so slowly and watch the dies very carefully as it is possible to move them too much and one side will protrude too far.
Edited by Big Elf - 10/12/12 at 5:15am
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Black Noise
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post #6 of 9
Thread Starter 
Thanks, BE, I was hoping you'd respond. I will give it a try.


I think I got it. Thanks again!

+rep!
Edited by mandrix - 10/12/12 at 5:21pm
post #7 of 9
This thread is old; however I must comment.

I as well found defects in my crimping. NOT blaming the tool; blaming myself for NOT taking the effort to examine it carefully. Mine worked great then went south, I blamed molex connectors. (quality). then this guy posted so I decided to get of my back side and understand this so called simple tool.

The Lower Jaw or chuck whatever it it called was loose, therefore destroying all my crimps. Once again I ordered more molex connectors; same issue. Over and Over.

Then I chose the path of looking at the Crimper. The lower jaw "holding screw" was loose. Thus destroying about everything I did with this tool. Would be upset with the seller, eeeerrrrrrrrr. Not just 10 or 20; My insane lack of taking control. Imagine a Seasonic X1050 and all needed cables (done) then find out you should start again.

My story of pay attention or you will pay much much more later.

Stephen
post #8 of 9
Thread Starter 
Yes....replacing the screws holding the crimping dies in place saved me a bunch of headaches. thumb.gif
post #9 of 9
Finally after a couple of years of use, I needed to re-adjust the dies on mine. Remembered this thread, saw same issue as Mandrix shows in post #2. Just one thing, BigElf you said it's better to adjust with the thing open, but I didn't get a good result like that. I put it 4 clicks closed, and then used a small Allen key to push against the lower jaw away from the handles while tightening the bottom screw. Upper jaw was much looser and I could just push against it with my finger (towards the handles) while tightening the screw.
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