Shuriken

[DarkVenom]

Hahahahahaha so youre saying this has become quite the mission lol

Thats a smart way to do it m8!

 

[spgfx]

I gotta say Smooth on tech support is great. After a phone call from them I got things straightened out and feel a lot better about tackling this as my first mold. Were going to switch from their OOMOO series silicon to Mold star 30. The OOMOO does not have a very good tear resistance. The Mole Star is also a 1 to 1 mix ratio and does not need to be degassed. It is also a much higher tear strength. This will allow me to make the mold walls thinner and use less material and get quite a few more pulls from the mold.

 

[DarkVenom]

Dude that great news! put on me a support list id love to get one of these!

 

[MikaPred2]

I use the Mold Star 16 Fast and I have done around six molds so far and have no problems with the resultant casts.

 

[spgfx]

From what I understand the 30 would give me more solid mold allowing for thinner walls. The 16 and alike is a lot more flexible for applications with deeper undercuts or recesses. I def. want to make the right choice for this application.

 

[MikaPred2]

This is very true. I used the 16 due to the very quick cure times. Though I agree that if you want thinner walls, go with the 30.

 

[troggs]

Very nice work so far, that's a neat mould box you've made (not my favourite job when I'm moulding) if this is going to be a 2 part mould, are you planning on having pour and vent holes?

 

[spgfx]

Yes. It will be poured flat with a pour hold in the middle of the body. There will also be vent holes at the high points of each leg and at the ends. I'm going to use a long pot life resin to and most likely pour into the leg vents just to make sure. I got the Smooth-on Moldstar 30 in order. I need to run a test on my molding clay
to make sure there are no bad reactions then start the mold prep. I'm guessing it's going to take a good part of the day to make sure I have a nice clean joint between the 2 mold halves.

 

[wulwhite]

Wow,nice work!

 

[MikaPred2]

The MoldStar should work pretty well with the clay. I haven't had any bad reactions to date.

 

[spgfx]

I'm going to be pouring almost $200 worth of silicon on this mold I need to make sure everything is right. I'm gonna run a test mold with the clay on this

This is the AVP Shuriken closes.If everything comes out good then later I can run a cast of the open on, cut off the legs and make an AVP open Shuriken for display. Killing 2 birds with one stone.

Making the clay boarder to separate the 2 mold halves is going to be a big pain. Does anyone know of a better or easier way ???? Perhaps melt the clay an pour it ?

 

[troggs]

Can you use WED clay for the border? it's a lot easier to work, you just have to be careful it doesn't dry out.

 

[spgfx]

I finally got a test mold done on the clay and there were no adverse reactions. I got all the clay laid in and I'm ready to pour the first side. I ended up completely melting the clay in a toaster oven then spreading it on a board. I learned this trick on a utube video. I let it sit for a few minutes and started working with it. The clay was very soft and easily handled. I was able to press it in with no problems at all.

I'm really interested to see how much of a job getting all this clay out to pour the 2nd side is going to be.

 

[yoshiwa1985]

Awesome job mike.

 

[troggs]

That's a great way of getting a neat separation line, I'll have to remember that trick

 

[spgfx]

Finally after months of hard work I got a 2 piece Shuriken mold. Step 1 is done and I confident that this mold will create a very nice cast. All my time and research has paid off. This mold build went without a single problem. I have WIP build pics and can post if there is any interest. Here is the finished mold.


I need to order some long pot life resin to cast this. I will need quite some time to pour the resin and get it into the legs.

 

[troggs]

That's a very clean loking mould, happy that it all worked for you, looking forward to seeing the first cast.

 

[MikaPred2]

Smooth Cast 310 has a 15-20 min pot life with a 3-4 hour cure time.

 

[spgfx]

I got the first 2 casting off the mold and Im not impressed ! I need to do some work to get a usable full pour. A lot of air gets trapped and needs to be vented out. The 1st pour was missing a large portion of the top side due to trapped air. The 2nd I added some vents and I was better but still missing a great deal on the top. I'm working on adding vents and figuring out a way to get ride of the trapped air. I was going to save these 2 castings and use them as wall displays but I have no time to work on such a project and thought I would offer them up to the members. These are by no means good castings but with some skill and TLC I think they would make a cool display. I would like to get $30 each +s/h. Anyone interested please PM for more info. I'm hoping to have some good casting soon.
Casting 1

Casting 2

 

[MikaPred2]

You may wanna do a couple brush-on "beauty coats" to each half of the mold before you do a fill. That usually ensures you have an excellent exterior to your casting.