Sandblasting gear is built tough. It has to be. Its entire job revolves around high pressure, abrasive grit, and a fair bit of noise. That said, it can’t take a beating forever without some occasional help.
Staying on top of your sandblasting equipment maintenance is the best way to ensure that when you pull the trigger, the machine does exactly what you need it to do. It saves you from those frustrating mid-afternoon breakdowns and keeps your costs down in the long run.
This is what we spend our days doing. In this post, we want to share practical, straightforward tips to help you keep your machinery in top shape and achieve proper surface preparation.
Your Sandblasting Equipment Maintenance – A Breakdown:
Nozzles and hoses.
The most obvious place to start is where the action happens. It’s small, but your nozzle is one of the most important parts to check during sandblasting equipment maintenance. Over time, the abrasive media passing through the nozzle will slowly wear away the internal lining.
As the hole gets wider, your air pressure drops, and you’ll find yourself using way more abrasive material to get the same result. It’s a bit like trying to wash a car with a hose that has a leaky head, really.
A simple habit to get into is checking your nozzle size regularly with a drill bit or a dedicated gauge. If it’s worn beyond its limit, it’s time for a change. Similarly, give your hoses a good “once-over.” Look for soft spots, which are a sign that the internal lining is wearing thin.
Air supply.
Most problems we catch during sandblasting equipment maintenance originate with the air supply. Moisture is the biggest enemy here. When compressed air cools down, it drops water, and if that water gets into your abrasive media, it turns into a sludge that clogs everything up.
The most important part of your maintenance work will be keeping your air supply dry and clean. This means regularly draining the water from your compressor tanks and checking that your moisture separators and aftercoolers are working as they should. In a humid climate like ours in New Zealand, this is even more important.
If you find your media clumping or the flow is inconsistent, the first thing to check is your air quality.
Blast pot and seals.
The blast pot is inherently a pressure vessel, so while it’s quite tough, it also deserves a bit of respect and a check-in now and again. The pop-up valve and the various seals throughout your system are also prone to wearing down because, like everything else, they’re constantly being blasted with dust and grit.
A leaking seal is a major safety hazard, so it’s important to check them during your sandblasting equipment maintenance. On top of that, every few weeks, it’s a good idea to depressurise the system and check the condition of the O-rings and gaskets. If they look flattened or cracked, swap them out.
Keeping these seals tight ensures you get the maximum “punch” from your equipment, which is the foundation of proper surface preparation. When your gear is running at the right pressure with a steady flow, you get a much better “tooth” on the metal, making the painting or coating stage that much more successful.
How often should you maintain your sandblasting gear?
You’re busy, and when you’re busy, it’s easy to skip the small non-urgent stuff. We’ve all been there. But even when the idea of stopping to clean a filter or check a hose seems like minutes wasted, you can’t let your sandblasting equipment maintenance fall by the wayside. In fact, the busy seasons are the most important times to stay on top of your gear care.
We recommend building in 15 minutes at the start or end of your day to do a standard walk-around of your gear. Look for signs of wear or issues from use, and give everything a light cleaning while you’re at it.
If you aren’t in the habit of using your gear every day, taking it out of storage every couple of weeks (at least monthly) and checking it over is best. Look for signs of rust or other wear that might be weakening your gear, and address them quickly.
These small sandblasting equipment maintenance practices will buy you a lot more productive hours, longer-lasting gear, and no seized valves mid-blast.
A note on your abrasive media:
Some materials are much more aggressive than others. If you’re switching between different types of grit, make sure you’re cleaning the pot and the lines thoroughly. Leaving a bit of heavy steel grit in the system when you switch to a softer glass bead can cause unexpected wear or even contaminate the surface of the next job you work on.
The best practice we’ve found to keep up with this is a logbook for your machinery. This is technically part of your sandblasting equipment maintenance and doesn’t have to be fancy, just an attached notebook or a shared digital note to help you spot patterns of wear and tear.
That’s it for now on sandblasting equipment maintenance. With all that said and done, you should be ready to keep your gear happy and humming as you get on with your surface preparation.
Need a little help with your sandblasting work?
We know that sometimes a job is too big for your current setup, or you might need a bit of expert advice on the best way to tackle a tricky surface. Our team is here to provide professional blasting and painting services you can rely on.
Get in touch with Hamilton Blast & Paint today for a free estimate.