Improving the Pauls Model Art Ferrari 310 1/12
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Re: Improving the Pauls Model Art Ferrari 310 1/12
Wow great work!
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Re: Improving the Pauls Model Art Ferrari 310 1/12
Looking good !
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Re: Improving the Pauls Model Art Ferrari 310 1/12
forgive my ignorance, but what's gypsium??
Re: Improving the Pauls Model Art Ferrari 310 1/12
Plaster or stucco i'd say.
Re: Improving the Pauls Model Art Ferrari 310 1/12
He meant gypsum and it's a mineral commonly used to make wallboard and as a powder mixed into cement. It is also used to make plaster for casting.JamesB wrote:forgive my ignorance, but what's gypsium??
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Re: Improving the Pauls Model Art Ferrari 310 1/12
I often use plaster or gypsum for a master model. You get in hardware stores and is use by dental technicians or to close a hole in the wall. It is cheap and easy to handle. You can cast it or make it more solid to from with fingers.
It dries fast and is easily to sand. May be you have a more modern stuff for that but for me it is very useful.
I am sorry to have no photos making that master model. So will explain it while I scrapped away some of the plaster.
At first I made from styrene sheet a cross like symmetrical shape,as you can see on the photo, and filled it with gypsum. This rough form was sanded with 80th sand paper when it was dried.
It dries fast and is easily to sand. May be you have a more modern stuff for that but for me it is very useful.
I am sorry to have no photos making that master model. So will explain it while I scrapped away some of the plaster.
At first I made from styrene sheet a cross like symmetrical shape,as you can see on the photo, and filled it with gypsum. This rough form was sanded with 80th sand paper when it was dried.
Re: Improving the Pauls Model Art Ferrari 310 1/12
Oh yes I get it!!!
All the name comes from Gyps, egyptum anyway!
Yeso in spanish (same ethimological root). An mine/industry explotation resort in Catalonia is called "Vilovi Gyps", name is algeps here in Valencia.
Yes, nice idea, and cheap, and good as long as you have good abilities to handle it, which you obviously have
All the name comes from Gyps, egyptum anyway!
Yeso in spanish (same ethimological root). An mine/industry explotation resort in Catalonia is called "Vilovi Gyps", name is algeps here in Valencia.
Yes, nice idea, and cheap, and good as long as you have good abilities to handle it, which you obviously have
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Re: Improving the Pauls Model Art Ferrari 310 1/12
Question regarding the "gips", as we call it in Teutonia . Isn't it that gypsum shrinks somewhat when the water evaporates? I have thought about
using it before but two things kept me from doing it. One is the supposed shrinkage (see above) and the second is that during the curing process
quite a bit of heat is generated and I wonder if that might be an issue if you use it next to styrene / plastic parts (think: warping). Or is this type
of gypsum different to the DIY plaster stuff? I mean I even bought some modelling plaster / gypsum, but so far haven't used it.
In my case the idea was a bit different though from your process. I thought to do a negative mould using gypsum by covering the original part in
something like a thin layer of wax or whatever as release agent, then apply some gel coat or silicone and on top of that some gypsum for strength
etc.. Or when casting engine parts to first cover them with a release agent and then in gypsum... Again just thinking aloud here, not yet doing
anything.
All of that blabla aside, I love what you're doing. It's again one of the builds using household stuff to create awesome results. Absolutely kudos to
you!!
using it before but two things kept me from doing it. One is the supposed shrinkage (see above) and the second is that during the curing process
quite a bit of heat is generated and I wonder if that might be an issue if you use it next to styrene / plastic parts (think: warping). Or is this type
of gypsum different to the DIY plaster stuff? I mean I even bought some modelling plaster / gypsum, but so far haven't used it.
In my case the idea was a bit different though from your process. I thought to do a negative mould using gypsum by covering the original part in
something like a thin layer of wax or whatever as release agent, then apply some gel coat or silicone and on top of that some gypsum for strength
etc.. Or when casting engine parts to first cover them with a release agent and then in gypsum... Again just thinking aloud here, not yet doing
anything.
All of that blabla aside, I love what you're doing. It's again one of the builds using household stuff to create awesome results. Absolutely kudos to
you!!
Cheers,
Roman
Roman
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Re: Improving the Pauls Model Art Ferrari 310 1/12
I never saw a shrinking when the gypsum dried.
The hardening will only need some minutes, but there is rest of water in it, that must evaporate. This needs either 2 or 3 days or you use a hair dryer or put it in an oven on low temperature.
The temperature of the curing process is neglectible, I think about 40 C.
Advantage of this material is you can sand it very well until you have the right shape and you can drill it.
The hardening will only need some minutes, but there is rest of water in it, that must evaporate. This needs either 2 or 3 days or you use a hair dryer or put it in an oven on low temperature.
The temperature of the curing process is neglectible, I think about 40 C.
Advantage of this material is you can sand it very well until you have the right shape and you can drill it.
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