Cast Texture

[AlastairCooke]

Hi All,
I am seeking some advice about the best medium to use to simulate cast texture on aluminium parts. In my experience stippled Mr Surfacer 500 adheres well to plastic card, resin and 3D print plastic. I am not sure if it will stick well to aluminium. Does good old Milliput or automotive glazing putty work? If using glazing putty how do you stop it self-levelling the texture away?

Thanks,

Alastair

[Stephen White]

There are some links to examples on the Knowledge Base here:

viewtopic.php?f=34&t=5811

High build primer works well. You can also use a spherical rasp bit in a motor tool. Rotate at low revs and bounce it off the surface.

[Tim Page]

I have used a product called Mr Surfacer.
It is pretty good but dont breath the fumes so plenty of ventilation required.

I now make my own because it is a lot cheaper and easier to get.
Get a tube of Humbrol plastic model filler and some Humbrol liquid poly glue.
Empty the contents of the tube into a small glass jar with a lid and them mix in some of the liquid poly until smooth.
It should not be too runny but it is about right if you can pour a bit onto the model and it should stay put.

I apply it using a piece of foam and dab it over the model.
You can build up layers if needed and it can also be sanded easily.
It is best to wear some latex gloves as it is very messy.

Cheers
Tim

[Robert Reid]

If you take a look in my Rolls-Royce engine thread, you can see I have a little plenishing hammer. Vibrates with a point and will actually put a wonderful cast finish into machined parts. We use it in the shop for repairing welded areas on aluminum and then blend it all together into old sand castings. Worked like a charm on the Ghost Engine.

Not sure where to find one of those tools, but someone must make them. Ours was made 'in-house' in the 1960's. Still going strong.

Cheers,

RPR

[AlastairCooke]

Hi All,
Thanks for the advice. That plenishing hammer is a 'nifty piece of kit' although I have not found one for sale.
Alastair