Improving the Pauls Model Art Ferrari 310 1/12

Models in progress... including non-F1 models.
User avatar

Topic author
ferrarissimus
World Champion
World Champion
Posts: 637
Joined: Tue Aug 06, 2013 2:46 pm
Favorite F1 Team or Driver: Ferrari
Status: Offline
Germany

Re: Improving the Pauls Model Art Ferrari 310 1/12

Post by ferrarissimus »

silicon form is made from the gypsum form (black) and the resin nose cast
silicon form is made from the gypsum form (black) and the resin nose cast
temporary test at the body...
temporary test at the body...
and at the front wing
and at the front wing

stubeck
Constructors Champion
Constructors Champion
Posts: 1477
Joined: Sat Dec 21, 2002 11:36 am
Favorite F1 Team or Driver: Stewart Grand Prix
Location: Charlotte, NC
Status: Offline
United States of America

Re: Improving the Pauls Model Art Ferrari 310 1/12

Post by stubeck »

Wow great work!
User avatar

lezdep
FOTA Chairman
FOTA Chairman
Posts: 3619
Joined: Tue Aug 23, 2005 2:42 am
Favorite F1 Team or Driver: Senna
Location: Toronto
Status: Offline
Canada

Re: Improving the Pauls Model Art Ferrari 310 1/12

Post by lezdep »

Looking good !
User avatar

JamesB
FOTA Chairman
FOTA Chairman
Posts: 8257
Joined: Fri Jul 11, 2003 2:26 pm
Status: Offline

Re: Improving the Pauls Model Art Ferrari 310 1/12

Post by JamesB »

forgive my ignorance, but what's gypsium?? :shock:

jaykay
FOTA Chairman
FOTA Chairman
Posts: 2567
Joined: Thu Apr 03, 2003 10:35 am
Status: Offline

Re: Improving the Pauls Model Art Ferrari 310 1/12

Post by jaykay »

Plaster or stucco i'd say.

Noddy
World Champion
World Champion
Posts: 626
Joined: Wed Nov 11, 2009 5:26 pm
Status: Offline

Re: Improving the Pauls Model Art Ferrari 310 1/12

Post by Noddy »

JamesB wrote:forgive my ignorance, but what's gypsium?? :shock:
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.
User avatar

Topic author
ferrarissimus
World Champion
World Champion
Posts: 637
Joined: Tue Aug 06, 2013 2:46 pm
Favorite F1 Team or Driver: Ferrari
Status: Offline
Germany

Re: Improving the Pauls Model Art Ferrari 310 1/12

Post by ferrarissimus »

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.
The styrene is visible when I scrapped away the gypsum a little bit.
The styrene is visible when I scrapped away the gypsum a little bit.
DSCN4017.JPG
DSCN4018.JPG
DSCN4019.JPG
User avatar

JamesB
FOTA Chairman
FOTA Chairman
Posts: 8257
Joined: Fri Jul 11, 2003 2:26 pm
Status: Offline

Re: Improving the Pauls Model Art Ferrari 310 1/12

Post by JamesB »

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 :D
User avatar

sky1911
Major Constructor
Major Constructor
Posts: 1049
Joined: Sun Jul 20, 2014 7:28 am
Favorite F1 Team or Driver: Jim Clark, Lotus
Status: Offline
Germany

Re: Improving the Pauls Model Art Ferrari 310 1/12

Post by sky1911 »

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!!
Cheers,
Roman
User avatar

Topic author
ferrarissimus
World Champion
World Champion
Posts: 637
Joined: Tue Aug 06, 2013 2:46 pm
Favorite F1 Team or Driver: Ferrari
Status: Offline
Germany

Re: Improving the Pauls Model Art Ferrari 310 1/12

Post by ferrarissimus »

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.
Meanwhile made the hole for the fuel cap. Was a little bit difficult to fasten the that big metal part when drilling with the 12 mm milling cutter. Finally glued a 0,1 mm styrene flap in.
Meanwhile made the hole for the fuel cap. Was a little bit difficult to fasten the that big metal part when drilling with the 12 mm milling cutter. Finally glued a 0,1 mm styrene flap in.
The fuel cap is turned from alu bar
The fuel cap is turned from alu bar
The panel lines of the closed fuel inlet at the opposite side was scribed with a circle with two metal pins.
The panel lines of the closed fuel inlet at the opposite side was scribed with a circle with two metal pins.
Post Reply
  • Similar Topics
    Replies
    Views
    Last post