Bob the Alien (Giger inspired Alien)
- Thread starter Leigh
- Start date
Re: Bob the Alien (Giger inspired Alien) Sculpting finished page 45
He shouldn't deform or sag, he has a vertical sheet of hardboard running right through the middle of his head, however I have added some small bits of wood under the front since I took those pic's just to be on the safe side
I'm about half way through the thixo bit now. All the spines are covered & the flange is built up to thickness. Really I've just got to do the smooth parts either side of his head, smooth it off a bit & then one non-thixo coat & its done.
Its so time consuming! Since I'm mixing up 200g at a time I'm having to keep mixing up as I'm getting through it quickly on something this size.
I don't know what they put in the thixo but its having a strange reaction in me! It does have warning signs all over it, Prehaps I should open a window :lol
I've had Radiohead keeping me company all day & I'm enjoying myself
He shouldn't deform or sag, he has a vertical sheet of hardboard running right through the middle of his head, however I have added some small bits of wood under the front since I took those pic's just to be on the safe side
I'm about half way through the thixo bit now. All the spines are covered & the flange is built up to thickness. Really I've just got to do the smooth parts either side of his head, smooth it off a bit & then one non-thixo coat & its done.
Its so time consuming! Since I'm mixing up 200g at a time I'm having to keep mixing up as I'm getting through it quickly on something this size.
I don't know what they put in the thixo but its having a strange reaction in me! It does have warning signs all over it, Prehaps I should open a window :lol
I've had Radiohead keeping me company all day & I'm enjoying myself
Re: Bob the Alien (Giger inspired Alien) Sculpting finished page 45
Errrr - dude YES, open windows. You're playing with a bunch of organic chemistry there. What sort of reaction? Been ages since I looked at an MSDS for that stuff; your supplier send you any?
Glad you're having fun, lol. Why only 200g - using a lot of thixo?
Errrr - dude YES, open windows. You're playing with a bunch of organic chemistry there. What sort of reaction? Been ages since I looked at an MSDS for that stuff; your supplier send you any?
Glad you're having fun, lol. Why only 200g - using a lot of thixo?
Re: Bob the Alien (Giger inspired Alien) Sculpting finished page 45
Its just about the right amount to knock up at a time, it starts getting stringy just as I'm getting to the bottom of the cup. If I knocked any more up I'd end up wasting some as it would be unusable
I just looked it up & apparently is has 'octamethylcyclotetrasiloxane' in it. Windows are now open
Its just about the right amount to knock up at a time, it starts getting stringy just as I'm getting to the bottom of the cup. If I knocked any more up I'd end up wasting some as it would be unusable
I just looked it up & apparently is has 'octamethylcyclotetrasiloxane' in it. Windows are now open
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Re: Bob the Alien (Giger inspired Alien) Sculpting finished page 45
Leigh, is the edge a bit feathered? It looks thin, which might not be any problem at all especially if there is more thickness closer in, but could also be more susceptible to tears than you really want it to be. A lot depends on your silicone, and how you handle it too of course.
Whatever the case...tidy as hell!
Leigh, is the edge a bit feathered? It looks thin, which might not be any problem at all especially if there is more thickness closer in, but could also be more susceptible to tears than you really want it to be. A lot depends on your silicone, and how you handle it too of course.
Whatever the case...tidy as hell!
Alaneye
Sr Member
Re: Bob the Alien (Giger inspired Alien) Sculpting finished page 45
I dunno what Leigh does, but I mix a little washing up liquid and water, dip my finger in it and smooth away... a technique I learned from smoothing bathroom silicone when sealing
How did you get the silicone so smooth after working it, I can see the grooves left by fingers, but when I try that, mine just gets loads of little pixie hats and trapped air
I dunno what Leigh does, but I mix a little washing up liquid and water, dip my finger in it and smooth away... a technique I learned from smoothing bathroom silicone when sealing
Re: Bob the Alien (Giger inspired Alien) Sculpting finished page 45
Martyn, I had actually thought about using cheese cloth on the flange.
Its about 6mm or 5/16" on average at the cut edge & at least 3/4" thick at the ends, it gets thicker the further in towards the head it goes. I would say that its at least 8mm thick on the thinnest parts over the head, closer to 10mm or 3/8".
I figured it should be thick enough once reinforced by the jacket.
As far as tears go, I'm very careful when I'm de-moulding. The rubber is the most important part to me & very costly as you know to replace. Keep your fingers crossed eh
Martyn, I had actually thought about using cheese cloth on the flange.
Its about 6mm or 5/16" on average at the cut edge & at least 3/4" thick at the ends, it gets thicker the further in towards the head it goes. I would say that its at least 8mm thick on the thinnest parts over the head, closer to 10mm or 3/8".
I figured it should be thick enough once reinforced by the jacket.
As far as tears go, I'm very careful when I'm de-moulding. The rubber is the most important part to me & very costly as you know to replace. Keep your fingers crossed eh
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Re: Bob the Alien (Giger inspired Alien) Sculpting finished page 45
With this one I did two skin coats applied with a regular artists brush, then several thixo coats applied with the lollypop sticks & finally one more non-thixo coat again applied with the brush. I don't use my fingers at all but I have trimmed the edge once its dry.
How did you get the silicone so smooth after working it, I can see the grooves left by fingers, but when I try that, mine just gets loads of little pixie hats and trapped air
I dunno what Leigh does, but I mix a little washing up liquid and water, dip my finger in it and smooth away... a technique I learned from smoothing bathroom silicone when sealing
With this one I did two skin coats applied with a regular artists brush, then several thixo coats applied with the lollypop sticks & finally one more non-thixo coat again applied with the brush. I don't use my fingers at all but I have trimmed the edge once its dry.
Re: Bob the Alien (Giger inspired Alien) Sculpting finished page 45
Just whatever you do Leigh don't ever let that skin turn inside out, lol. I hope your jacket will grip it well too, the ridges are for that I assume? Things are sounding and looking damn good! :thumbsup
Just whatever you do Leigh don't ever let that skin turn inside out, lol. I hope your jacket will grip it well too, the ridges are for that I assume? Things are sounding and looking damn good! :thumbsup
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LoneWolf Models
New Member
Re: Bob the Alien (Giger inspired Alien) Sculpting finished page 45
Awesome project… You have mad skills!
Awesome project… You have mad skills!
Re: Bob the Alien (Giger inspired Alien) Sculpting finished page 45
Thanks
Thanks man
Here's the spec on the rubber I'm using:
Outstanding release properties
High Flowabilty and long woring time
Medium Hardness
High tear resistance
High elasticity for easy removal of complex replica parts
Can be made thixotropic (non flowable) for vertical surface replication
Cured Properties of MBFG Silicone
Mix Ratio : 100:10
Working Time : 40-60 Minutes
De-Mould Time : 12-24 Hours
Mixed Viscosity mPas : 18000
Hardness Shore A : 27
Tensile Strength Mpa : 3.0
Elongation @ Break % : 520
Tear Strength kN/m : 23
Linear Shrinkage & : 0.2-0.4
Thanks
Thanks man
Here's the spec on the rubber I'm using:
Outstanding release properties
High Flowabilty and long woring time
Medium Hardness
High tear resistance
High elasticity for easy removal of complex replica parts
Can be made thixotropic (non flowable) for vertical surface replication
Cured Properties of MBFG Silicone
Mix Ratio : 100:10
Working Time : 40-60 Minutes
De-Mould Time : 12-24 Hours
Mixed Viscosity mPas : 18000
Hardness Shore A : 27
Tensile Strength Mpa : 3.0
Elongation @ Break % : 520
Tear Strength kN/m : 23
Linear Shrinkage & : 0.2-0.4
Morbid flo
Member
Re: Bob the Alien (Giger inspired Alien) Sculpting finished page 45
hey leigh its so nice to see how good your work goes forward!!!!!i just can say AMAZING!!!!!!!
hey leigh its so nice to see how good your work goes forward!!!!!i just can say AMAZING!!!!!!!
leatherface24
New Member
Re: Bob the Alien (Giger inspired Alien) Sculpting finished page 45
This is my first post here and the first thread I read every post on and I must say I am incredibly impressed and inspired! Keep it up!
This is my first post here and the first thread I read every post on and I must say I am incredibly impressed and inspired! Keep it up!
Re: Bob the Alien (Giger inspired Alien) Sculpting finished page 45
Thanks Flo
Thank you for the kind words & I'm glad you enjoyed the thread
Welcome to The RPF
Thanks Flo
Thank you for the kind words & I'm glad you enjoyed the thread
Welcome to The RPF
