Hi @Roland , I may purchase this replica 99% sure, but I was wondering if you can tell us more information about it. If the size of the bag and the logo is screen accurate, if the real prop had those black plastics to make the handle stronger, and if the iridescent material is very similar to the original prop.
Also, my vote for his next replica goes to the 80's Cafe menu sheet. Always wanted that and it may be an easy one if made in vinyl or plastified/laminated sheets.
I may order the bag some days later ;-)
Ask Roland if it's screen accurate ? Roland just provides the best
I know. I have almost all his replicas (if not every one), but I still want confirmation about size, if the real prop had those plastics, etc. That's all, because the description is incomplete to my eyes.
Ojobenito
In my original post I posted a link to my tutorial. I thought the informations in that tutorial are sufficient enough. But you're right, I will update my post.

Here are the answers to your questions.
At first you should know,
screen accuracy is very important to me, depending on informations (from item descriptions in auctions for example) that I can get. That includes correct dimensions, colors, position of parts of the prop, fonts (if there's some printed text) etc.
But: I don't care much about
prop accuracy! That means, my replicas could be made of completely different materials than the original props. For example: My oversized Biff check is printed vinyl on acrylic, the real prop is printed on cardboard. Or the orange color of my DeLorean license plates - it's an orange vinyl sticker instead of orange paint. Correct color, but different matarial.
My "Blast from the Past" bags have of course the correct dimensions of 9 inches x 15 inches. The logo and the triangular hole are 100% screen accurate in size and position. The original bag actually has a black glossy strip to make the handle stronger. You can see it in several scenes in the movie. Here are three screen caps:
On the third picture, you can see that the strip has a bright border. That's why I printed a white paper sheet black and laminated it. I don't know if that's the correct material, but as I said: I don't care much about
prop accuracy.
My iridescent material is the only one that I was able to find here in Germany. I found it from two brands ("Folia" and "Heyda"), but their material is exactly the same. I guess it's made from the same (chinese?) factory. I have never seen the original bag in person, I just know it from pictures, and so I don't know if the iridescent material is the same as on my bags, but at least I know it's iridescent and not holographic.
To get an idea of the dimensions of my bag, here is another picture of it, together with Mark Poon's almanac and receipt:
If you have any other questions, don't hesitate to ask!
