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Semi-scale ASH25

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Jolly Roger
Posts: 387
Joined: 30 May 2015, 20:35
Location: Sutton Bank, North Yorkshire

Re: Semi-scale ASH25

Post by Jolly Roger »

B Sharp wrote:
08 May 2020, 22:36
Goodness, what an exciting life you lead Rog!
Brian. :D
Ah, the retrieval of wayward models....a challenge as old as aeromodelling itself. :roll:

Jolly Roger
Posts: 387
Joined: 30 May 2015, 20:35
Location: Sutton Bank, North Yorkshire

Re: Semi-scale ASH25

Post by Jolly Roger »

Cockpit tray moulded and fixed to frame. Just going to run some cf tows around the outside to stiffen it and give more gluing area for canopy.
I seem to be stuck in an endless circle of filling/sanding with the fuselage. Just when I think I’m ready to spray, the light catches an imperfection. At some point I just need to man-up and shoot some primer at it.
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Chris Bowles
Posts: 89
Joined: 18 Mar 2015, 16:12
Location: South Devon

Re: Semi-scale ASH25

Post by Chris Bowles »

Looking good Roger, only problem is you see more defects after spraying on primer !!!

roo Hawkins
Posts: 820
Joined: 18 Mar 2015, 20:12
Location: Northamptonshire

Re: Semi-scale ASH25

Post by roo Hawkins »

Hi roger I use isopon reface great stuff. Looking good

Jolly Roger
Posts: 387
Joined: 30 May 2015, 20:35
Location: Sutton Bank, North Yorkshire

Re: Semi-scale ASH25

Post by Jolly Roger »

Chris - I know! It's going to look SO BAD when sprayed.

Roo- thanks for the tip. I've never sprayed 2K and don't think my health could handle it now. So I'll probably use a rattle-can primer and just accept it is an inferior result.

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chris williams
Posts: 1160
Joined: 10 Mar 2015, 10:50
Location: Blandford Dorset

Re: Semi-scale ASH25

Post by chris williams »

Rog, another option is to brush on 2K primer over the worst areas. You need to do some industrial-scale flatting, but you can start coarse (120) and work your way to fine (600). This will leave you with a surface with all but the largest imperfections filled. Aerosol primer is so thin in order to get it out of the can, that it's about as much use as a chocolate teapot...
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roo Hawkins
Posts: 820
Joined: 18 Mar 2015, 20:12
Location: Northamptonshire

Re: Semi-scale ASH25

Post by roo Hawkins »

Hi roger I do not spray it I brush it on .it sands really easy. Stopped using micro balloons has it makes me feel ill when sanding even with a mask. Also I use 2k stopper to fill small holes.

Jolly Roger
Posts: 387
Joined: 30 May 2015, 20:35
Location: Sutton Bank, North Yorkshire

Re: Semi-scale ASH25

Post by Jolly Roger »

Thanks Chris and Roo. That’s good to know. I’ll order some. I assume although it’s polyester based it’s compatible with epoxy GRP.

Interesting what you say Roo about the microballoons becoming a problem for you. I’d never realised until I read the label last week that you should have a mask on before you open the tub.
It’s true, and worrying, when they say that whatever material you work with ends up inside you.
With composites in particular people develop sensitisation over time, to the point where even a trace of the substance will trigger an allergic-type response.
And it’s harder than ever to get PPE at the moment for some reason?

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chris williams
Posts: 1160
Joined: 10 Mar 2015, 10:50
Location: Blandford Dorset

Re: Semi-scale ASH25

Post by chris williams »

I use this stuff, especially as it's available in white...!

https://classiccarpaintsdirect.com/shop ... rimer-kit/

Jolly Roger
Posts: 387
Joined: 30 May 2015, 20:35
Location: Sutton Bank, North Yorkshire

Re: Semi-scale ASH25

Post by Jolly Roger »

Thanks again Chris. Good enough for you.... definitely good enough for me!

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