Making blanks with ribbons inside

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Silverman

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I found this subject is somehow hidden or not widely explained due to trade secrets or who knows why )))
Here is example of blanks, that i am talking about. The main idea, that used in public videos - is to cast thin sheet of epoxy resin, then put it inside the form, pour in another resin - and voila - blank is ready. But when i am trying to reproduce such scenario i found:
1. The ribbons on pics much thinner, that mine - it is look like their thickness is about 0.3-0.5 mm
2. During the exoterm peak - my ribbon becames soft, and the folds have tendency to straightens out.
3. Also the look of ribbons in pics are more like fabric folds, look very natural and random.
4. In such bunch of folds - how the bubble problem need to be solved?

So i think the ribbons material could be not only self made sheets, but also ... PVC sheets or maybe another plastic sheets?

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Silverman

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Thank you, Gersh. I have seen this video before. And i reproduce similar step by step making of such blank and processing it. After that some question still no answered. And i decide to post these questions.
Also i attaching my process step by step as example.

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jttheclockman

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If you are comparing ribbon blanks made by casters and those produced in a manufacturing plant they will pale. They have a process that is done in sheets and not blocks. I can not remember who showed how acrylic blanks are made. Maybe it was Ed from Exotics or someone else who visited. But I do remember seeing the process. It is done something like taffy is made if I remember correctly. Maybe someone can post a link to the video.
 

Bob F

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The ribbon blanks that you are asking about and trying to make are machine injected in a controlled environment and there are only a few plants in the world with this type of facility --its not a process that can be done with the common casting materials available to the public
 

Bob F

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you can get a similar effect by using certain fabrics -however the best results are achieved with translucent resin to get the depth -and obviously when you do that with pen blanks you will see the tube --we make a line called our psychedelic series that has a mesh fabric in it (pictured below) to give you an example
 

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Silverman

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Thank to all of you for ideas and suggestions. About fabric - if it is color formed by printing over it, not by coloring in mass - it will be notices white color on cuts of it - and this side effect looks not very good. But if it is syntetic fabric, colored in mass - maybe it will be suitable for this purpose. Also i still hope for the plastic sheets - that can be formed bu using heater similar to hair dryer and then used in form several sheets of it. Here is i see two main points. 1st - the adhesion need to be good and strong. 2 nd - the temperature of softening for this sheets of plastic need to be higher, then exoterm temperature of pouring compound. I have some ideas - i need to check them out ))). I will report later.
 

Silverman

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duncsuss, i am talking about the same - i already have some colour sheet of pvc plastic, they used in plastic card making - and we making plastic cards also. Now we are making some ribbons from silk (soaking them by resin, then froming) and forming by heat gun another pvc sheets (additional sanded and degreased). Then we will use them in new resin blanks.

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Silverman

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Here is just quick example of PVC sheet bendings. I take A4 sheet 0.30 mm and cut some stripes from it, then heat it by small heater from WOW and bend it by my hands. This heater has a narrow and quite precise heating flow. But actually you need to keep in mind - length of stripe before heating need to me much longer, then actual form length - if you want it to be seamless. Maybe 2x or even 3x, because during heating and bending it becomes much shorter. So in some cases you need at least A3 size sheets or even bigger.

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Silverman

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these are cool - I like the look of these at least for stoppers and bigger blanks for sure , nice job
This block made of acrylic sheets with laser-cut holes. Then they are stacked together. On the corners there are some acrylic mini stoppers - to keep the even/uniform distance between individual layers. Then we put this inside form and pour in the epoxy resin. In the beginning of the next week we will start to lathe it. Resin need to be finally hardened.
 

Silverman

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interested in your results with stabilized silk - good stuff silverman

We test this idea - and while it is look gorgeous from the start - it starts separating during sanding and other operations. So it is not compatible.
 

Bob F

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We test this idea - and while it is look gorgeous from the start - it starts separating during sanding and other operations. So it is not compatible.
--ya i was afraid of that --we have done similar tests with a few different fabrics and most fail testing at some point --but we keep trying ,lol
 

Silverman

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--ya i was afraid of that --we have done similar tests with a few different fabrics and most fail testing at some point --but we keep trying ,lol
The fail was with acryl combination with epoxy resin. But silk looks good and processed ok.
 
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