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Old 11-07-2012, 10:36 AM   #1
fab1
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Default Moulding compounds resins HELP

I am new to moulding and have been experimenting casting the Thunderbirds
gun and pods using rubber moulding 2 part liquid. The cast works but leaves a bitty finish on the fins when I remove the resin copy.
Is there a moulding compound and resin that people would recommend?
Equally any UK suppliers?
Any help gratefully received.

A second call for help, I have the 3ft Stingray kit and wondered if anybody
knows what kit the canopies came from for the two detachable side pods?

Graham
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Old 11-07-2012, 03:09 PM   #2
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Quote:
Originally Posted by fab1 View Post
I am new to moulding and have been experimenting casting the Thunderbirds
gun and pods using rubber moulding 2 part liquid. The cast works but leaves a bitty finish on the fins when I remove the resin copy.
Is there a moulding compound and resin that people would recommend?
Equally any UK suppliers?
Any help gratefully received.

A second call for help, I have the 3ft Stingray kit and wondered if anybody
knows what kit the canopies came from for the two detachable side pods?

Graham
Hi Graham,

The Aquasprite canopies were custom made for Stingray as far as I remember. If you search eBay for bubble canopy you may find something suitable. I found this on my first go contact the seller for sizes.

http://www.ebay.co.uk/itm/Phantom-Mi...#ht_500wt_1156

Did you buy the eBay model sold this very morning? Must say I was tempted but the shape needed some work. I decided to save up for Mama's version it has a clear rotor and looks very good.

Any chance you could post an image of the resin issues you are having? it sound like you might have an issue with air trapped at or near the surface of the mould in the RTV. What type of resin are you using?

Supplier I use is Jacobson Chemicals http://www.jacobsonchemicals.co.uk/ they sell RTV's and Urethane resin especially suited to the model maker.
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Old 11-07-2012, 05:53 PM   #3
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You are just so good, thank you, thankyou!
I will investigate the canopies on ebay and no I didnt buy the Stingray off of ebay but it does look like the kit I have.
I will get some pics together but think its the rubber just not up to the job. I will contact Jacobson tomorrow that site looks very interesting and ask their advice.

Buzzing today as after a long hunt I have found Parker trouser material ie correct striped suiting.
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Old 12-07-2012, 05:22 PM   #4
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Jacobson have been very helpful and I have sent pics to them and they are ringing me back, couldnt ask for more than that.
Thanks again, I will post pics when completed
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Old 12-07-2012, 06:58 PM   #5
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Quote:
Originally Posted by fab1 View Post
I am new to moulding and have been experimenting casting the Thunderbirds
gun and pods using rubber moulding 2 part liquid. The cast works but leaves a bitty finish on the fins when I remove the resin copy.
Is there a moulding compound and resin that people would recommend?
Equally any UK suppliers?
Any help gratefully received.

A second call for help, I have the 3ft Stingray kit and wondered if anybody
knows what kit the canopies came from for the two detachable side pods?

Graham
The "Choco" Stingray had custom Vacuformed canopys.
Sounds like the moulds have trapped are bubbles and are transfering to the resin.
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Old 25-07-2012, 07:11 PM   #6
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I'm also new to the moulding/casting arena. I've been looking at various "easy" resins for use in casting. Could anyone help me out - is there any real difference between PolyCraft EasyFlo Clear

http://mbfgfiles.co.uk/datasheets/easyflo_tech.pdf

and SmoothOn's Smooth Cast series.

http://www.smoothon.com/tb/files/SMO...7_COMBO_TB.pdf

I'm attempting to mould some buttons, a cap badge and belt buckle. I have an RTV Silicone moulding compound

http://www.metalclay.co.uk/products/...252d-300g.html

I have a source for pigments, metal powders and SmoothOn's Cast magic powder.

If anyone could give me some advice I'd be very grateful.
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Old 29-08-2012, 05:43 PM   #7
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I use Polytek EasyFlo white and clear resins... I only started resin casting a few weeks ago and it's amazingly addictive

Can't remember the name of the silicone rubber I use, but it works a treat. I recast a Yujin 1/32 Gordon Tracy PVC figure and it looks perfect.
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Old 30-08-2012, 12:35 PM   #8
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Come to think of it, I did the vac forms for chocos Stingray lol, Bloody memory
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Old 30-08-2012, 12:57 PM   #9
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Quote:
Originally Posted by TV21Dalek View Post
I use Polytek EasyFlo white and clear resins... I only started resin casting a few weeks ago and it's amazingly addictive

Can't remember the name of the silicone rubber I use, but it works a treat. I recast a Yujin 1/32 Gordon Tracy PVC figure and it looks perfect.
I presume you're working up to clear-casting a replacement canopy for FAB1?
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Old 30-08-2012, 07:28 PM   #10
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I wish... I don't know what clear resin to use. I used Water Clear resin and it never, ever set. Do you get clear polyurethane resin?
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Old 30-08-2012, 09:43 PM   #11
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Don't know if they're available where you live, but SmoothOn products work great. Their Crystal Clear 202 has served me well for small transparent replica toy parts. Due to the small part sizes I deal with, the replicas take 3-4 days to fully cure (so that they don't bend) but they are not sticky.
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Old 30-08-2012, 11:24 PM   #12
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If it never set, it sounds as though you didn't get the catalyst ratio right, although I'm no great expert myself. I've only worked with fibreglass and car filler (which is basically fibreglass resin + talc!)
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Old 05-04-2013, 05:54 PM   #13
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I've been using SmoothOn for years and it works great 99% of the time. The tricky thing about silicone molds is they really should be degassed. I used to have a nice little vaccuum machine just for that purpose but it and everything else I owned went up in smoke 3 years ago.
I use a 1/10 gram scale for measuring the mold-making and resin compounds. I also use disposable plastic cups of different sizes to measure everything, and I weigh them first and subtract their weight from the weight of the compounds. A scale with a tare weight feature can do that for you.
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Old 13-04-2013, 09:40 PM   #14
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Hi, don`t know if this is the best place to ask, but I`m trying to source a resin which when it goes off dries an olive green colour. This is the colour of the resin used in the original puppet heads. Any ideas? Ta
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Old 13-04-2013, 11:14 PM   #15
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Barnes here in Australia makes Easycast, which you can add pigments to...

http://www.barnes.com.au/catalog/eas...kg-p-2178.html

... but that probably doesn't help you, being all the way up there in the UK. Also it's not really made for rotational casting, which their Rotothane is.
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Old 15-04-2013, 12:34 PM   #16
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Quote:
Originally Posted by TVC21 View Post
Hi, don`t know if this is the best place to ask, but I`m trying to source a resin which when it goes off dries an olive green colour. This is the colour of the resin used in the original puppet heads. Any ideas? Ta
Most fibreglass resin suppliers also supply pigment which is mixed in with the resin to make gelcoat. I had to approximate British Racing Green when some git scraped a big mark on the wing of my Sylva Striker with the door on his Range Rover.
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Old 17-04-2013, 06:37 PM   #17
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Most fibreglass resin suppliers also supply pigment which is mixed in with the resin to make gelcoat. I had to approximate British Racing Green when some git scraped a big mark on the wing of my Sylva Striker with the door on his Range Rover.
Thanks, at the moment I`m going to try gelcoat with fillite filler
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Old 17-04-2013, 06:50 PM   #18
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Quote:
Originally Posted by TVC21 View Post
Hi, don`t know if this is the best place to ask, but I`m trying to source a resin which when it goes off dries an olive green colour. This is the colour of the resin used in the original puppet heads. Any ideas? Ta
Not turning into a Lovejoy are we??
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Old 17-04-2013, 07:13 PM   #19
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Not turning into a Lovejoy are we??
Don`t understand? If you mean faking an original absolutely not. Hold your horses for a week or two and all will become clear!!
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Old 17-04-2013, 08:00 PM   #20
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Chris,you can get pigment pastes in small jars that you can mix and put in with the styrene resin,mix well before you add the catalyst.
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