Davek0974
****!, Drink!, Girls!
- Messages
- 918
- Location
- Hertfordshire
Previously i have been making scroll-work brackets out of hot-rolled steel that has a slightly rough surface - this gave the coat a good surface key.
Downside was that mill-scale cracked when bent so needed a lot of post-bend cleaning.
Now i have changed to a new steel which is cold-rolled with a bright finish, almost mirror like surface.
Just discovered that the powder-coat does not adhere very well to this smooth surface!
So, what can be done to 'key' the surface??
Needs to be quick, easy and cheap as these are price-sensitive i.e. relatively low cost items.
I could maybe get a blast cabinet if media blasting is a way in, but concerned about the grit gating stuck in the tight corners made by the scrolls.
I read about iron phosphating but that needs a hot bath to dip the parts.
Whats a way forwards here??
Downside was that mill-scale cracked when bent so needed a lot of post-bend cleaning.
Now i have changed to a new steel which is cold-rolled with a bright finish, almost mirror like surface.
Just discovered that the powder-coat does not adhere very well to this smooth surface!
So, what can be done to 'key' the surface??
Needs to be quick, easy and cheap as these are price-sensitive i.e. relatively low cost items.
I could maybe get a blast cabinet if media blasting is a way in, but concerned about the grit gating stuck in the tight corners made by the scrolls.
I read about iron phosphating but that needs a hot bath to dip the parts.
Whats a way forwards here??