Sand blasting...it's a great way to spend a Sunday. Crusted in sweat and sand, glasses misted over, gloves gritty, shoes half full of the crunchy crystals...what could be finer?
I managed to wear this one out...I don't have another ceramic snout handy so I stole the one from my blast cabinet and continued onward.
It is not a glamorous process. And you sure can't do it inside.
If you like the sting of sand pelting your face and arms this is the job for you..
Not just bare metal, etched, grippy, ready to paint metal.
All those well engineered, carefully punched and pressed features on the landscape of the metal panel are hiding places for paint residue. Residue that spoils the powdercoat.
What may not be apparent at first glance is the multitude of edges in the hex mesh section that need to be blasted to produce a clean looking finish. Any residue clinging to that 1/32" wide edge of each hex will burn up as the powdercoat is baked at 400F for 18 minutes or so and raise up through the powder disturbing how it levels out and bonds. Has to be mare metal.
Each one of these darlings loves to hold paint...there'ss the detent and horseshoe edge...and the nice little crease they form into the vertice of the flange...and te rolled lip of the flange. It's all gotta be blasted to steel.
The closer you look the more surfaces and edges and angle and lips and flanges you see...
Big flats I can work over by machine and hand rapidly, and then give them a cursory blast of sand knowing they are paint free, and blast for texture.
Sanded to 220 with my electric DA.
Ditto. The welded standoffs for the window are the dark spots...no paint there.
This piece is headed for the sand blasting process after being scraped and sanded every where possible first.
Ditto...many, many rolled edges on all those holes. Fun.
Compared to the HDD caddy this is a walk in the park...or sand pit.
These stand offs on the HDD caddy were probably the only unstripped area to give me a clue about what the original finish is like. It's damn tough is what it's like. My guess: powdercoat. But it's bare metal now.
I know these little features so well I should give them all names/
Just to refresh the memory, what it looked like before...
And what it looks like now.
A thing of beauty
Oh yeah...Lets make a fabulously complicated stamping.
to Coat.Edited by CyberDruid - 8/8/10 at 10:41pm