Visor help

[old tide]

Sorry if Im using the wrong channel its just that this is a pretty specific question.
Im currently prepping all the materials Ill need to 3d print a helldivers cosplay. Ive got almost everything except I dont really know how to do the visor. I know that the files come with a visor buck and a lot of people use PETG sheets (but amazon also has PET so it it that different?) and use heatguns to bed them around the visor buck. But I have no idea what thickness I should get. I see a lot of people using anything from 0.4 mm to 2 mm. Im not sure how much this matters but I dont have a lot of money to get this wrong. Ive attached links to some that I thought might work. Im mainly worried about the thickness and how much it matters.

https://www.amazon.com/PETG-CLEAR-PLASTIC-SHEET-0-060/dp/B00B2ANYG4
https://www.amazon.com/PERFORMORE-Pack-Sheet-Plexiglass-Panels/dp/B08PG44YQG/ref=sr_1_19?crid=3OJ3EFER9JM7H&dib=eyJ2IjoiMSJ9.moc5DsdqHYjqFqDBPimG0K4BnaLtu19sOn6NoUaiqUF8zLx--BSs7twC_R-oZQWhVrsiSFRrY6W2jN1aGY73qetyEArZ40P3jAMK3eGKWjUBhCy66sIUmRpv54gyZeisZjDJI40QhPfmpF6UQEAQL8tbzj75PP6e8atVKlqW_Ck9RuxBdsminiLsZRJUi5KkYkbIZKDRWKyN1REqTU70k9u_gWDB-LAtFBIpfrPFcDc.9ZFOn_GxVOsaTEaooPvS2UmbHqUmB63lrfXpB9Ka6v8&dib_tag=se&keywords=clear%2Bpetg%2Bsheet&qid=1744167916&sprefix=clear%2Bpetg%2Bsheet%2Caps%2C159&sr=8-19&th=1

[native relic]

Hey @old tide, thank you for contributing to this forum.
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[old tide]

Here are the official ones that galactic armory sells.

[open talon]

a lot of people use PETG sheets (but amazon also has PET so it it that different?)
Yes, absolutely different. You want PETG

[old tide]

Do you know how much the thickness matters?

Anything above 0.6mm stats to get really expensive, but if its that important then Ill get thicker ones.

[open talon]

Sorry I don't. I do resin printed visors instead of vacuum form. I pay attention to the chat somewhat. I know that the same reason they add glycol ( the G in PETG ) is to aid in its flow and flex for printing is the same reason you want it for vacuum forming... But I don't do VF myself.

I want to say most folks are in the .4 range. Going thicker tends to be overkill, make it harder to work. I think its .4, but should be some YouTUbes that can confirm it