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mark mc25/02/2013 15:03:09
92 forum posts
16 photos

Hi all, this might sound like a silly question but what is a good paint for cast iron. I'm making a engineers level from the castings over at ces. I have the machining done but would like to paint the rough parts say green. what's a good paint to stick to cast iron ? Do i need to prime it first.

Gray6225/02/2013 15:22:47
1058 forum posts
16 photos

I have painted a couple of machines with Wilkinsons own brand metal paint, priming with red oxide first. They do a good 'classic' type grey as well as a decent green and blue. This paint seems to be suitably resistant to most oils and lubes found in the average home workshop (well mine at least).

I did look at using hammerite at one point but after enquiries with the manufacturer I was advised that it was not resistant to many common oil based products.

Hope this helps

Graeme

KWIL25/02/2013 16:30:52
3554 forum posts
70 photos

Give the cast iron a good scrub with a wire brush to remove any loose carbon particle in the cast iron surface, Red oxide it straight away.

mark mc25/02/2013 21:58:35
92 forum posts
16 photos

No worries thanks, will get some orderded.

Andyf25/02/2013 22:26:45
392 forum posts

Hearsay only:

On other forums, folk have reported good results with floor paint on machinery, for its hard-wearing quality and resistance to oil etc.

Andy

Andrew Johnston25/02/2013 22:59:18
avatar
6601 forum posts
701 photos

I used Hammerrite on my rotary table, universal dividing head and pillar drill with no problems so far, apart from the odd chip here and there. The floor paint I used on the floor has long since worn away.

Regards,

Andrew

Andyf25/02/2013 23:40:36
392 forum posts

I'm no paint expert, but the Hammerite might have worn a bit quicker than your floor paint had you used it on the floor and then walked/trod swarf into/dragged things across it.

Andy

Windy26/02/2013 08:52:23
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890 forum posts
190 photos

My friend painted his full size Fordson Dexter with Tractol paint it is also used on construction equipment.

On its first show it won top award.

On the steel and cast iron it looks great if you use the correct primers etc they have a good range of colours RAL, BS 381C & BS 4800

Paul

Derek Drover26/02/2013 08:53:49
86 forum posts

Wilkinson do a very good spray enamel, in a variety of colours. The matt black is very good for model engineering (and used on the hugger of my motorbike).

del.

Stub Mandrel27/02/2013 20:19:19
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4315 forum posts
291 photos
1 articles

I thought I had already posted this, but I find Humbrol enamel works well on small items, using ordinary brown or grey spray primer.

Several of my machine tools/vices came with a 'hammerite' finish.

Neil

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