What is the best way to fuse two credit cards together?

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Discussion Overview

The discussion revolves around the idea of fusing two credit cards together, exploring methods for cutting and joining them, and considering the implications of such modifications. Participants share their thoughts on the practicality, strength, and potential risks involved in this unconventional project.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant suggests using PVC cement to weld the cards together and asks for cutting pattern suggestions.
  • Another participant questions the definition of "best" and emphasizes the need for experimentation with cheap or old cards, noting that joining cards may invalidate them.
  • A participant expresses a desire for the fused card to be as strong as a regular card, mentioning that the project is primarily for unused debit cards and highlights the potential security benefit of disabling the magstripe.
  • One comment humorously critiques the complexity of the project, referring to it as an elaborate approach to credit consolidation.
  • A suggestion is made for creating a cross-section cut pattern that would allow the cards to interlock, potentially improving stability and preventing separation.
  • Another participant recommends using dovetail joints as a reliable method for joining the cards.
  • A discussion arises about the implications of using altered cards in machines, particularly regarding the functionality of the magstripe during transactions.
  • One participant proposes a "foam finger" shape for cutting the cards while keeping the magstripes intact, raising questions about the placement of chips on the cards.
  • Participants share insights about the location of chip placement on cards, complicating the proposed cutting method.

Areas of Agreement / Disagreement

Participants express various opinions and suggestions regarding the methods for fusing the cards, with no consensus reached on the best approach or the feasibility of the project. There are multiple competing views on cutting patterns and the implications of altering the cards.

Contextual Notes

Participants acknowledge potential risks, such as invalidating the cards and complications when using them in machines. There is uncertainty regarding the placement of chips and magstripes on different card designs.

Catapult
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I want to fuse two of my chip cards together. If not for convenience, then just for fun. My plan is to cut them and use PVC cement to weld them together. What would be the best pattern to cut out the cards in? Any suggestions?
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Define "best". What do you need it to do?
You should get some cheap cards, or use old ones, to experiment with.
Be aware that joining two cards like this can invalidate them.
 
Simon Bridge said:
Define "best". What do you need it to do?
You should get some cheap cards, or use old ones, to experiment with.
Be aware that joining two cards like this can invalidate them.
Ideally I would want to make the frankencard as strong as a regular card, though I'll be happy if is doesn't break apart in my wallet.
My endgame here is to do this for my debit cards which I never use except for ATM deposits/withdrawals.
If it doesn't work I can get new cards from my bank, not a big deal. One of the advantages of this is that the magstripe is disabled, protecting me from (most) skimming attacks.
 
Last edited:
This has got to be the single most elaborate approach to credit consolidation that I've ever heard of... :rolleyes:
 
I can't see that holding well, unless you do some elaborate cross-section so that the internal edges along the length of every cut channel are sloped, one slot with positive-negative slope and the other in negative-positive slope.
Like this: |____/...\_____\.../___| (this is a cross section of one card) (dots = air, _ = solid plastic)
then the other card will need the same pattern but inverted so you can slide it in.
.../__\...\__/... (same perpsective as above)
the left slot + cantilever will prevent lateral relative momevement between the cards in one direction, the other in the opposite direction.

Do at least 4 slots in total in a way that can prevent rotation of the card with the 2 cantilevers in CCW direction. As you see in the pic if this rotates they can separate easily. Not with 4 slots that lock the card in in both directions in each side.

That way you just need to stop the pieces from sliding to keep it in shape right? If you do 4 slots or even more like in your picture and it's a rough job, friction may suffice.

I'm not very mechanics-inclined but maybe this would work.

Regardless, if you do this I think you might jam up some ATM and never see it again.
 
If you insist upon doing it, dovetail joints are a tried and true standby any time.
 
for the most possible strength splitting the cards thickness would be the ideal method increasing the surface area to the maximum and laminating both together. just one question if you use an altered card in any machine a broken mag strip will get the card to spit out without doing a transaction how do you plan to use it for deposits and withdrawals?
 
dragoneyes001 said:
if you use an altered card in any machine a broken mag strip will get the card to spit out
Maybe... hmm... if he were to cut each one into a "foam finger" shape leaving both mag strips intact on opposite sides of the cards... hmm...
 
^that might work.

quick question if anyone knows where they embed the chips at first it was in line with the mag strip but is it now where the hologram is?
 
  • #10
Mine is dead centre on one end.
 
  • #11
that complicates the foam finger shape if both are not on the same side
 
  • #12
Ooops! Hmmm...
 

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