Pressure blasting

[OneEyedMan]

Pressure blasting is the term I’ve heard used to describe introducing abrasive media into a pressure washers stream to strip rust or paint. Thinking about it now, I’ve also heard it called dustless sandblasting.

I have a new to me Trail King equipment trailer with badly flaking paint due to what looks like a poor prep job years ago. I have a 4000 psi pressure washer and found a Hotsy abrasive pot to use with it. I won’t have time to do the whole trailer in one go and am hoping to do the frame in four stages, left outer rail, inner rail, right outer rail, inner rail.

My hope is to blast the area and allow it to dry then follow with a primer coat as soon as possible. After all blasting and priming, I’m planning on painting the whole trailer at one time before I re-deck it. Anyone here played with stripping equipment and painting it like this?

 

[PCustoms]

Wet blasting.

Comes down to the GPM of the washer and how fine/dry the sand is. My experience was I still tasted sand.

Parts will flash rust if you don't dry and coat ASAP.

 

[ctandc72]

Wet blasting.

Comes down to the GPM of the washer and how fine/dry the sand is. My experience was I still tasted sand.

Parts will flash rust if you don't dry and coat ASAP.

What he said. Screening the sand, finding the right feed angle / setup. It works. But it still makes a mess. Just a wet mess that you can't sweep up or use the blower on. While it's nothing like the pressure washer setups - I used a guy's trailer mounted 'wet blaster' setup a while back. It worked great...but it was Spring. In the South. Before I finished the frame I blasted, I swear I could hear it flash rusting before I could dry it off.

 

[BillK]

Do yourself a huge favor and pay somebody to blast it. You will thank me later. BTDT Never again.