Back to the Future II 2015 Jacket Build NEW VIDEO JACKET pg 27!!!

[Spyhunter2k]

Re: Back to the Future II 2015 Jacket Build

So after looking through many many many pages of textured materials—plastics, vinyls, rubbers—it looks like the texture on the gray parts matches best with the texture used on anti-slip/anti-skid rubber mats. Mitas posted an anti-fatigue foam backed product with a texture that was really close.

The texture is usually called "stipple" but sometimes is referred to as a "gnarled" texture. The key is finding it in a really thin variation with no gel or foam padded backing. I think I have a source, and have ordered a sample of this:

The problem is that the same texture appears in several different scales. I actually saw car floor mats at Wal-Mart with this texture, but in two different scales on the same mat (and in small strips, so unusable for us). If this material I've found has this texture in the correct scale, it could work for us. It's a bit shy of 1/8" thick and has no backing.

 

[Spyhunter2k]

Re: Back to the Future II 2015 Jacket Build

To make it easier for you guys to compare, here it is pasted on top of the sleeve:

Fingers crossed that the scale is correct.

 

[Spyhunter2k]

Re: Back to the Future II 2015 Jacket Build

And a comparison with the other sleeve pic:

 

[cavx]

Re: Back to the Future II 2015 Jacket Build

Looks good.

 

[Spyhunter2k]

Re: Back to the Future II 2015 Jacket Build

A side point: the collar looks to be 3/16 or 1/4 neoprene (or similar) rubber. The straps look like 1/8 or 3/16 neoprene. So with the smooth bellows rubber and the non-slip textured material used for the sleeves, center trim, and pocket trim, that would make three different materials used for the gray jacket parts.

I think it's safe to say that the prop makers didn't find these materials in the exact same color, so we're going to have to use some sort of vinyl/rubber dye to get them all to be the same shade of medium/dark gray.

 

[MitasTouch]

Re: Back to the Future II 2015 Jacket Build

The original jacket may have been made from the material that was just posted. The jacket being so old made it sort of weathered.

 

[MitasTouch]

Re: Back to the Future II 2015 Jacket Build

Mitas posted an anti-fatigue foam backed product with a texture that was really close.

It wasn't me who posted that. I haven't posted any pictures about this texture.

 

[Spyhunter2k]

Re: Back to the Future II 2015 Jacket Build

You did, but you might not have known it. You posted a link (in post #413 on p.17) to a rubber runner, and looking back at that link now, it actually looks like it could be the same material I just found, with the only difference being that the website you pasted only sells it in bulk rolls. Their website pic of this material isn't zoomed in enough on the texture to be able to compare it with the jacket as easily as the sample pic I just found for this new material, so I can't say for sure if it's the same stuff as what I've just found.

It was my mistake in thinking that the product you posted had a foam or gel backing that served an "anti-fatigue" purpose, but looking back it doesn't—sorry for the confusion.

If I can confirm that this material I've found is both the same texture AND grain size/scale as the real jacket material, I'll post up the specifics on it, and I'll order a few yards to run some tests with. I want to see how it folds when it moves/drapes. Some of those sleeve pics of the real jackets seem to have wrinkled areas that a sheet of pure rubber wouldn't seem to have. We may yet have to mold one of these 3/32" thick gnarled rubber sheets, and then use it to create a final jacket fabric by spraying a few coats of rubber into the gnarled textured mold, then backing it with a fabric.

 

[deadbolt]

Re: Back to the Future II 2015 Jacket Build

Maybe the sleeve fabric is something along the lines of this stuff?

The X-Derm a Unique Coarse and Bumpy Rubber Surface

Considering that the texture looks to be visible on the edges of the elbow straps as well, then it's tough to tell how they really did it for filming. Maybe custom coated, pre-cut fabric pieces?


-Carson

 

[MrFusion]

Re: Back to the Future II 2015 Jacket Build

Talking to my lathe guy tonight. got the drawings done for the lower bellows. as the top and bottom are different sizes...lame. anyway heres the drawing.

 

[Spyhunter2k]

Re: Back to the Future II 2015 Jacket Build

The X-derm stuff looks too course to me. The texture is visible from several feet away, instead of only being noticeable closer up. I could be wrong.

 

[MitasTouch]

Re: Back to the Future II 2015 Jacket Build

You did, but you might not have known it. You posted a link (in post #413 on p.17) to a rubber runner, and looking back at that link now, it actually looks like it could be the same material I just found, with the only difference being that the website you pasted only sells it in bulk rolls. Their website pic of this material isn't zoomed in enough on the texture to be able to compare it with the jacket as easily as the sample pic I just found for this new material, so I can't say for sure if it's the same stuff as what I've just found.

It was my mistake in thinking that the product you posted had a foam or gel backing that served an "anti-fatigue" purpose, but looking back it doesn't—sorry for the confusion.

If I can confirm that this material I've found is both the same texture AND grain size/scale as the real jacket material, I'll post up the specifics on it, and I'll order a few yards to run some tests with. I want to see how it folds when it moves/drapes. Some of those sleeve pics of the real jackets seem to have wrinkled areas that a sheet of pure rubber wouldn't seem to have. We may yet have to mold one of these 3/32" thick gnarled rubber sheets, and then use it to create a final jacket fabric by spraying a few coats of rubber into the gnarled textured mold, then backing it with a fabric.

Lol woops. I guess I forgot about that. My bad.

 

[MitasTouch]

Re: Back to the Future II 2015 Jacket Build

Talking to my lathe guy tonight. got the drawings done for the lower bellows. as the top and bottom are different sizes...lame. anyway heres the drawing.

Did you scale it from the real jacket, or the jacket that me and Jedifyfe have been using? Because the diameter of the arms on the jackets me and him used are between 7 and 8 inches. I'm not sure about the real jacket though.

 

[Spyhunter2k]

Re: Back to the Future II 2015 Jacket Build

Mr. Fusion, that looks great!

One thing to think about: the bellows on the real jackets terminate at each end with the wide ring of bellows 1 and 6. If you make the bellows go straight up/down at mid-point/broad ring of each of these ends, these straight up/down sections can be tucked under/glued to the sleeve material easier than if you taper back down to small rings.

Here's a drawing in PowerPoint to illustrate what I'm saying:

 

[MrFusion]

Re: Back to the Future II 2015 Jacket Build

That's what I've done. I've even taken it in 2mm at each end to accept the main sleeve material so it butts up nicely to the last and first 'peak' of the bellows. not just a pretty face ah? Lol

 

[TK9477]

Re: Back to the Future II 2015 Jacket Build

This sort of build is why I'm lovin this site!!!

 

[Spyhunter2k]

Re: Back to the Future II 2015 Jacket Build

As far as the bellows go, I arrived at the same "found" and ready-to-go source as Gary for these—McMaster Carr. They sell lengths of neoprene bellows of an accurate look/compressibility in enough incremental diameters so that two of them I'm sure will probably look plenty accurate enough for this jacket.

But 1) they may not be exactly the diameters I calculate are ideal, 2) they won't have the easy-to-fit end sections like Fusion is planning (which I think is really cool) and 3) they may be more expensive than what Fusion comes up with (several hundred $$$ from McMaster Carr).

That's what I've done. I've even taken it in 2mm at each end to accept the main sleeve material so it butts up nicely to the last and first 'peak' of the bellows. not just a pretty face ah? Lol

Cool beans! But I am curious. Would you mind telling us how you determined the ideal diameters of the inner/outer shoulder and forearm bellows rings and what size jacket they are scaled for (accurate compared to a screen-used Michael J. Fox-sized jacket vs. a me-sized (40R) jacket)? Will you be disclosing the diameters of your bellows so that folks like myself can see if they match up with what we calculate they should be before we buy them? For example, if my best guess is 10" OD on the shoulder bellows (not saying it is—just throwing that number out there) and I can't find out what yours are until I buy them, I would probably pass.

I hope this makes sense and that you don't take offense to these questions.

 

[MrFusion]

Re: Back to the Future II 2015 Jacket Build

na none taken.
i basically just done some good guess-estimations from the pictures added below and a jacket i own.

I put the measurements up soon, just going to make a full size mock-up and see how it looks first.

the pic of my jacket has lines of where i measured. while at it, measure the pockets and cuffs also.

 

[Spyhunter2k]

Re: Back to the Future II 2015 Jacket Build

One "a-ha" moment I had was when measuring the areas described by the red lines on your jacket, I mistakenly thought at first that these lines identified the bellows diameters of those locations, when they actually do not.

To explain, when the fabric lays flat like that, and you measure, say 10" at red line placed at the shoulder joint, this does NOT mean the bellows diameter at the shoulder would be 10".

When your arm is in the jacket the 20" of material (10" along the red shoulder joint line in front and 10" down the backside) becomes the circumference of the cylindrical shape the sleeve assumes once your arm is in it, meaning the actual diameter of this cylinder created by 20" of measured length at the shoulder joint is only 6.34".

In short, if you were to have made a bellows with a diameter matching the flat front suface measurment at the shoulder, it could end up being bigger than you intended since the diameter of that area shrinks once your arm is in it and it assumes a cylindrical shape.

If you already knew/realized this, please disregard, though maybe it will benefit others...

 

[MrFusion]

Re: Back to the Future II 2015 Jacket Build

All measurements were made round the circumference of the areas where the bellows will sit. The outter circumference is the same as my jacket. The inner circumference is an acceptable size to allow my arm through with room to play with while giving plenty of 'bellow' between the two. Been working on the drawings for the cuffs and waist corragate the last few days. Post some pics up soon.
Should be picking up some large plastic blocks Saturday to be lathed into the bellows masters. And also a long block about 40 inches long for the cuff/waist mould.

Keep ya posted