Starting my ODST build

[chaos cre8ions]

Sorry that I went dark, I got sick and had to head to Missouri Paracon this last weekend. I’ve attach the MKII top half of the helmet. The green glows

I might have a glowing addiction!

 

[chaos cre8ions]

Now to finish my buck

 

[SPARTAN A128]

That would be really cool to watch print in the dark

 

[chaos cre8ions]

How far down do I sand the bucks?

 

[JamesAdams]

The smoother the buck, the smoother the visor. Imperfections like ridges, bumps, etc. will come through in the visor and cause a distortion in vision. Due to the concave shape of the visor its a little bit like looking through a fish bowl. So ideally the smoother you can make it, the better your vision through the visor will be.

In my experience a step down approach to sanding would be 120, 220, 400, 600(wet). If you want a SUPER clean visor a final wet sand with 1000. YMMV.

 

[chaos cre8ions]

Vacuum formed successfully! Chrome to come

 

[chaos cre8ions]

Does anyone have any tips for how to remove the plastic from the buck after it’s formed?

 

[chaos cre8ions]

 

[chaos cre8ions]

Did I over do it?

 

[RyFISH]

You could probably heat it up and peel it off. Just a guess tho

 

[N8TEBB]

Does anyone have any tips for how to remove the plastic from the buck after it’s formed?

I'm a little confused. What happened? Is the plastic not coming off the buck? What am I looking at in that picture?

Sometimes the plastic won't come off if there's an overhang on the buck. Sometimes the plastic you're using to form is too rigid and won't bend away from the buck. What happens when you try to remove it?

 

[RyFISH]

I'm a little confused. What happened? Is the plastic not coming off the buck? What am I looking at in that picture?

Sometimes the plastic won't come off if there's an overhang on the buck. Sometimes the plastic you're using to form is too rigid and won't bend away from the buck. What happens when you try to remove it?

Mb chief I read the old message. Excuse my 4th grade reading level

 

[chaos cre8ions]

I'm a little confused. What happened? Is the plastic not coming off the buck? What am I looking at in that picture?

Sometimes the plastic won't come off if there's an overhang on the buck. Sometimes the plastic you're using to form is too rigid and won't bend away from the buck. What happens when you try to remove it?

I’ll take a picture of the next form I do. Basically the visor forms so well the buck will not come out from under the visor. The pictures I posted the buck is nice and smooth, but appeared to create the c shaped scratches? Do I have to worry about that transferring to the visor?

 

[chaos cre8ions]

I'm a little confused. What happened? Is the plastic not coming off the buck? What am I looking at in that picture?

Sometimes the plastic won't come off if there's an overhang on the buck. Sometimes the plastic you're using to form is too rigid and won't bend away from the buck. What happens when you try to remove it?

Sorry on the vague post. I was trying to get the pictures up before the dentist started drilling.

 

[N8TEBB]

Hey no problem with the slightly vague post. I just wanted to learn more about your situation.

I think those C-shaped scratches will show up in your next pull. I’ve never seen scratches like that though, that’s very interesting. There's a few reasons the plastic could have a hard time coming off the buck. If it's caught on something, if the plastic is just too rigid and won't ben away, or if it sticks to the buck for some reason. Seeing as it created visible deformities on the buck when you pulled it away, I would intuitively thing that that last option is the case, but I can't quite be certain what the exact cause was.

Those c-shaped patterns remind me very much of the pattern an orbital sander leaves behind when sanding low grit on a gummy surface. Did you sand the buck down after you removed the plastic? Or did those patterns immediately appear after you took the plastic off the buck?

Also, sorry if you've already mentioned this, what thickness and type of plastic are you using to vacuum form? And how hot are you heating the plastic to?

 

[chaos cre8ions]

Hey no problem with the slightly vague post. I just wanted to learn more about your situation.

I think those C-shaped scratches will show up in your next pull. I’ve never seen scratches like that though, that’s very interesting. There's a few reasons the plastic could have a hard time coming off the buck. If it's caught on something, if the plastic is just too rigid and won't ben away, or if it sticks to the buck for some reason. Seeing as it created visible deformities on the buck when you pulled it away, I would intuitively thing that that last option is the case, but I can't quite be certain what the exact cause was.

Those c-shaped patterns remind me very much of the pattern an orbital sander leaves behind when sanding low grit on a gummy surface. Did you sand the buck down after you removed the plastic? Or did those patterns immediately appear after you took the plastic off the buck?

Also, sorry if you've already mentioned this, what thickness and type of plastic are you using to vacuum form? And how hot are you heating the plastic to?

Amazon.com

That’s the plastic I’m using for the visor. I wet sanded the buck until I was using 3000 grit. When I wiped the buck the Cs showed up.
I have been using the oven at 300 and letting the plastic droop until it’s evenly sagging.

 

[chaos cre8ions]

Amazon.com

That’s the plastic I’m using for the visor. I wet sanded the buck until I was using 3000 grit. When I wiped the buck the Cs showed up.
I have been using the oven at 300 and letting the plastic droop until it’s evenly sagging.