So I'm doing my CDP hole punching, and noticed that on 3 or so questions I could arrive at the answer just by looking at the first fold's symmetry. This greatly aids my timing on that section, but I'm worried that this will not occur on the DAT. Anyone with any experience on this?
hole punching Q
- Thread starter mh0000
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first fold symmetry helps in some cases, but it depends on the exact folds...
say you make two vertical folds: (1) in half, now 4 tall by 2 wide (2) top layer in half again...now the first column is one layer thick, and the second column is three layers thick. if you punch one hole in that second column, you'll get three of them. that doesn't match the symmetry of the first fold.
honestly, you're golden if you just go with the grid method. it's really straight forward to just draw in the hole and then reflect it back step by step all the way to the first frame. just a mechanical algorithm...honestly it's almost like a break during the PAT.
you can try to juggle it in your head but the risk-reward on that isn't worth it time-wise and accuracy-wise.
say you make two vertical folds: (1) in half, now 4 tall by 2 wide (2) top layer in half again...now the first column is one layer thick, and the second column is three layers thick. if you punch one hole in that second column, you'll get three of them. that doesn't match the symmetry of the first fold.
honestly, you're golden if you just go with the grid method. it's really straight forward to just draw in the hole and then reflect it back step by step all the way to the first frame. just a mechanical algorithm...honestly it's almost like a break during the PAT.
you can try to juggle it in your head but the risk-reward on that isn't worth it time-wise and accuracy-wise.
oh scratch that. you obviously didn't need that explanation if you only saw it on three problems.
Yes, you will have a couple on the DAT that are that easy, so it should help your timing. I still recommend the grid method for the others though, it's too easy and too bulletproof to not use in my opinion.
Yes, you will have a couple on the DAT that are that easy, so it should help your timing. I still recommend the grid method for the others though, it's too easy and too bulletproof to not use in my opinion.
yeah, i've been using the grid method on the more complicated folds and works fine. Hey rock, do you usually do one hole punch at a time or a whole frame at a time using the grid method? I've been doing both to try to find out which one I'm better at. At this point, it seems to be a trade-off between timeing and accuracy with me.
I do all the holes together, the entire pattern. I start with an empty grid and draw holes in according to the last frame. Then compare frame n to n-1 to find the single fold between them, and reflect accordingly...keeping in mind that only the holes on the flap being folded get reflected, and if that flap was the only layer there then the original holes are now gone.
Doing it one hole at the time would be a huge waste of time because you'd have to get your bearings on the folds frame-by-frame 3, 4, 5,... different times. At least to me.
Yeah, I've only been practicing hole punch for an hour, so it's probably just a matter of doing more practice. But I certainly was curious about whether or not anyone was able to answer the question almost immediately due to only one of the answers actually being symmetric with the very first fold. THanks for the help rock!
No problem. I drew out 16 grids on the laminated sheet during the tutorial and then just did all 15 problems blindly. Once you get practice, you'll be stupid fast at it...the limiting thing is almost going to be how fast you can write. I didn't even look at symmetry or the answer choices. I just ran through the folds and grided out the original holes, and then matched that to the right answer. Never failed me. Good luck, it's really not bad at all once you hone your method.
lol. so I just did 2 hole punch tests. This time I stopped "thinking" and "imagining" the holes and folds in my head and developed a more systematic, "blind" (as you stated) way of doing these things, and now I can't miss a hole punch question. Rockclock, when you say you did the problems "blindly," do you mean if someone gave you a problem that you just solved and asked if you did it already, you wouldn't know? Because that is exactly the way it is for me, no perceptual thinking. Rock, you're also right about the timing. I'm almost at the point where looking from the screen to my paper and making marks is what is limiting me. So i guess I owe you another thanks for the inspiration to develop a blind approach 🙂
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glad to hear it man!exactly. you just operate on those few basic principles and power through on autopilot. once you have that algorithm set up, any other "strategy" or "trick" you could add-on (symmetry, etc.) would only slow you down.
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exactly. you just operate on those few basic principles and power through on autopilot. once you have that algorithm set up, any other "strategy" or "trick" you could add-on (symmetry, etc.) would only slow you down.
Autopilot is certainly the way it feels. I almost feel guilty, because it definitely defeats the purpose of testing my perceptual ability. But I'm sure I'll get over the guilt quickly 😉
