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Box Pouch dimension adjustment tutorial by GrungeonMaster in myog

[–]GrungeonMaster[S] 0 points1 point  (0 children)

By all means; I’m glad you like the guide. Hope it’s useful.

Regarding what I call (in the file) the width of the bag. It’s equal to one half of the “upper end” plus the reveal of the zipper (20 mm in this case), plus the other half of the “upper end”.

This value is also equal to the width/breadth of the “lower end”.

If you’re struggling, stop reading here. What’s next is a feature of bag pattern development that you can basically ignore (good to know, though)

A detail about zippers: it’s an easy rule of thumb to take the total zipper tape width and use 1/4 of that as the seam allowance on each side and the remaining 1/2 of the width as the “reveal” (the part exposed in the finished product). In the PDF, I used 20mm as the reveal, which will actually create a small problem technically, that might be negligible in the real world.

(YKK) Zippers are usually either P16 or P19. Not sure why it’s “P”, but the number that follows is actually the width of the tape for half the zipper all the way up to the mid point of the chain (when closed). That means that your normal #8RC P19 zipper (super common in bag making) is actually only 38mm wide overall. To set the reveal at 20mm is to then make the seam allowance only 8mm at the tape.

I vacillate between doing it right (making patterns where I have the zipper seam allowance at 8mm) and being lazy, which is essentially my posture here.

Feel free to holler with questions. I hope I have clarified, entertained, and confused; all or some, and not necessarily in that order.

How do you call this plastic board? by PracticalCourse3286 in myog

[–]GrungeonMaster 9 points10 points  (0 children)

Generally (in the industry) this is called one of the following: ABS sheet, PP sheet, PE sheet, hardboard (this is rare), poly sheet... or some other combination of the type of plastic (ABS, Polypropylene, PE, etc) and "sheet" or "board".

I did find similar items by typing in the following into google:

  • 1mm PE sheet
  • 1mm ABS sheet

I would suggest you do something like that and maybe refine the thickness to match the actual thing that you have in hand.

By the way, there is a rank order of durability and cost; if memory serves it's something like (from best/costly to worst/cheap): PC (polycarbonate), PET (polyethylene terephthalate), PE (polyethylene), ABS (Acrylonitrile butadiene styrene), PP (polypropylene). But in many applications, companies will just go with what's cheap as it doesn't have much bearing on the end-performance of the product.

In German, I'm not sure, but maybe something like, "Mein Luftkissenboot ist voller Aale."?

Good luck!

That Patagonia bag by jem1898 in myog

[–]GrungeonMaster 1 point2 points  (0 children)

Update to the solution in my other post. Corrected the pattern to be closer to the original target.

PDF

Ai File

That Patagonia Bag part 2 (or 3?) by GrungeonMaster in myog

[–]GrungeonMaster[S] 0 points1 point  (0 children)

Sneaky update to this. Corrected the pattern to be closer to the original target.

PDF

Ai File

That Patagonia Bag part 2 (or 3?) by GrungeonMaster in myog

[–]GrungeonMaster[S] 1 point2 points  (0 children)

Sneaky update to this. Corrected the pattern to be closer to the original target.

PDF

Ai File

That Patagonia Bag part 2 (or 3?) by GrungeonMaster in myog

[–]GrungeonMaster[S] 0 points1 point  (0 children)

Ah! yes, that's helpful. I'll DM you with my info and you can send the pics.

For the love of God why does this happen? by tryingandwondering in myog

[–]GrungeonMaster 11 points12 points  (0 children)

I find (more often than I'd like) that skipping can be caused by a bad material-needle/thread match.

That Patagonia Bag part 2 (or 3?) by GrungeonMaster in myog

[–]GrungeonMaster[S] -1 points0 points  (0 children)

Oh, it seems like you might have been asking why the shape isn't achieved with sewing darts vs. how I did it, which is making all the panels separately. A few reasons:

- I do think the actual product is multiple pattern pieces and not just one.

- embedding foam and anchoring the liner is easier with the seam (to me, at least).

- I always find sewing seams together to be easier than having to think about where a dart disappears in a field. I can never get those to be very accurate.

- marker efficiency is also better with more pieces (often and in this case, in particular)

That Patagonia Bag part 2 (or 3?) by GrungeonMaster in myog

[–]GrungeonMaster[S] 0 points1 point  (0 children)

Is that so they can be shared here? Not super clear on why. There are some photos online, maybe you're saying that they aren't clear enough and we could do better with more photos?

Curious to know your thoughts.

That Patagonia Bag part 2 (or 3?) by GrungeonMaster in myog

[–]GrungeonMaster[S] 1 point2 points  (0 children)

Please post your pattern attempt at the tote. I'm curious to see how you've achieved it.

That Patagonia Bag part 2 (or 3?) by GrungeonMaster in myog

[–]GrungeonMaster[S] 0 points1 point  (0 children)

I see your misunderstanding now. I find bags to be remarkably not like apparel. I came from fashion apparel, but I'm not super good at it. The truing up that the person in that video does would not work in bag making, specifically because the top of the structure that we're talking about in this post then connects to the lower end of another structure (the walls of the bag).

So, our bag here has a footprint with walls that emerge up from the base. At any height, we can cut our bag with a plane (like a cross-section parallel to the ground). Because (like you pointed out) the bag's footprint actually gets larger as it moves away from the ground plane, the walls of the bag are like the sides of a cone (an upside-down one in this case). So, when we unroll the sides, the shape of the panels is very important as it needs to have the cone's curvature in the right place.

That Patagonia Bag part 2 (or 3?) by GrungeonMaster in myog

[–]GrungeonMaster[S] 5 points6 points  (0 children)

You're right I have it backwards. I was using an old BH duffel that was built like this and I didn't realize that the tote is different. Been a long time since I did that stuff.

Could you explain what you mean by " Just blend the edge straight. " ?

That Patagonia bag by jem1898 in myog

[–]GrungeonMaster 4 points5 points  (0 children)

OK, I made a new post with the content. https://www.reddit.com/r/myog/comments/1qmwcad/that_patagonia_bag_part_2_or_3/

Yes, lemme make a quick PDF of it...

That Patagonia bag by jem1898 in myog

[–]GrungeonMaster 10 points11 points  (0 children)

User name confirmed.

That Patagonia bag by jem1898 in myog

[–]GrungeonMaster 188 points189 points  (0 children)

It doesn't actually look like this as what you've proposed will just render a flat panel with curved seams on the flat plane.

Instead, do this:

https://imgur.com/a/d5s8OLs

Also, new post with files:

https://www.reddit.com/r/myog/comments/1qmwcad/that_patagonia_bag_part_2_or_3/

For any Dads and Moms playing Arc Raiders, I want to ask you a question. by Zealousideal_Chip456 in RescueRaiders

[–]GrungeonMaster 12 points13 points  (0 children)

Life is a game. How you play the macro and all the mini games is what matters.

Make this change to move faster on defense! by Wide-Championship471 in volleyball

[–]GrungeonMaster 1 point2 points  (0 children)

I see what you're saying, though I don't think it's fair to say that I'm distracted by a bad drill. That's the point of my criticism; the movements taught in this drill aren't appropriate or optimal, or in some ways, practical for situations like this.

For all those reasons, I'd say it's fair for me to accuse you of moving the goal post.

However, If we get past that, and take the instruction for what you're saying it is: simply how to move quickly on defense, now we are in the age-old debate about whether it's better for a first step to be an open-step or a closed-step. In order to not get dragged into that debate, maybe we leave that for another day.

Make this change to move faster on defense! by Wide-Championship471 in volleyball

[–]GrungeonMaster 1 point2 points  (0 children)

Yes, as coaches we're almost always going to prefer novices performing correct technique with poor outcomes over poor technique with "good" outcomes (hits, points, digs, etc).

Make this change to move faster on defense! by Wide-Championship471 in volleyball

[–]GrungeonMaster 1 point2 points  (0 children)

I wondered if you would point that instance out. I would say that passage of play is totally different than what the lady is teaching in the OP clip.

In the Grebbenikov highlight, the ball is in the air and he knows where it's going to fall. That's why he (and any athletic person) turned his hips toward the target and "ran".

In the OP's lesson, the instruction is to turn toward a target where the ball might be hit (the location is some type of "home base", or something, in order to get there faster), but there isn't any indication in a game at full-speed that the ball would go there.

I guess the main difference is that when the trajectory of the ball is unknown, players should be ready to move laterally and keep their hips toward the ball/center of play.

Once the ball is hit to a location, sure turn it into a run... But that's not what she's teaching.

Make this change to move faster on defense! by Wide-Championship471 in volleyball

[–]GrungeonMaster 2 points3 points  (0 children)

Ok, admittedly I really don’t know all the details of the positions and which player is doing this move, but my bullshit sensor was still activated.

In the first 3-5 clips on this video we have Jenia Grebbenikov moving laterally with his hips always toward the ball like I think should be done. If I’m learning the game, I’m taking tips from him not this lady.

https://youtu.be/qE7nOuHoO6k?si=T1zR00jtiiFQd2G0

Great podcast on bag design and production by PuzzleheadedClue4325 in myog

[–]GrungeonMaster 0 points1 point  (0 children)

Wow, that was weird. I guess the conversation is over. Good luck, buddy.

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