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Author Topic: "keying in"  (Read 180 times)

martin goddard

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"keying in"
« on: July 16, 2020, 07:50:52 AM »
"Keying in" is the official (?) name for scratching two surfaces so that glue etc  achieves a better grip.

Do you do any keying in/scratching as a matter of course. 
e.g "I always scratch the two surfaces when attaching space men arms to bodies."

I always scratch  surfaces when attaching metal tracks to tanks.
I also do it  when putting riders on horses  (metal).
I do the  scratching with a knife point or compass point.

martin

Colonel Kilgore

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Re: "keying in"
« Reply #1 on: July 16, 2020, 08:13:54 AM »
Good point, Martin.

I can safely say that I always neglect to key in when gluing.

I do however sand my plastic bases before priming, so that the primer sticks better.

Do I get half a point for trying?

Simon

Radar

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Re: "keying in"
« Reply #2 on: July 16, 2020, 08:18:04 AM »
Nil points for Château KeepYourPowderDry then

Mike6t3

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Re: "keying in"
« Reply #3 on: July 16, 2020, 08:49:15 AM »
I do when glueing metal to metal (if I remember) but don't if gluing plastic to plastic using polystyrene cement as the glue fuses the parts together.

Mike

John Watson

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Re: "keying in"
« Reply #4 on: July 16, 2020, 09:35:13 AM »
I very rarely key in, unless I have identified in advance that the two surfaces will not glue easily or I have tried and failed to bond the joint already. However I do try to pick the best glue for each job first.
On priming bases, if I am using mounting board I don't bother. I use a coloured board nearest the end result that I want. If using PP white or black bases then I use a cheap acryllic straight onto the base, then PVA, then dip into sand, then paint the sand covered base.
John

Colonel Kilgore

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Re: "keying in"
« Reply #5 on: July 16, 2020, 10:55:30 AM »
John - but what about the underside of your plastic bases - do you not lavish similar care there too?  :o

Simon

Andoreth

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Re: "keying in"
« Reply #6 on: July 16, 2020, 10:55:51 AM »
I usually use a scalpel to put a couple of lines across arms and waists on 28mm plastic figures to create a better join. If a joint looks particularly weak, such as a head/body connection where both surfaces are smooth I will drill out both and pin them. I seldom key anything in 15mm and do not key riders to mounts. 

John Watson

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Re: "keying in"
« Reply #7 on: July 16, 2020, 11:37:56 PM »
Simon.

No.

John.

pbeccas (Paul)

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Re: "keying in"
« Reply #8 on: July 17, 2020, 12:39:12 AM »
I never key in.  Maybe I should.

Colonel Kilgore

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Re: "keying in"
« Reply #9 on: July 17, 2020, 08:37:49 AM »
John,

Am shocked.

Simon

Smiley Miley 66

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Re: "keying in"
« Reply #10 on: July 17, 2020, 06:25:48 PM »
I do “key in” sometimes use Green Squadron putty as well to help meld the bond.
Then the join you have something to fill in the “gap” and trim down if it’s an outside edge.
Miles

martin goddard

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Re: "keying in"
« Reply #11 on: July 18, 2020, 08:18:59 AM »
I sometimes key in large surfaces (the base of a building attaching to a base) by using a very "ruff" piece of sandpaper. Such a piece of sandpaper has the granules sticking up like spikes!

martin

NTM

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Re: "keying in"
« Reply #12 on: July 18, 2020, 08:25:15 AM »
Nope never do

Nigel

Nick

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Re: "keying in"
« Reply #13 on: July 18, 2020, 12:33:05 PM »
Can’t say that I’ve felt the need for keying in on anything as yet.

Nick