Magnetic + Mechanical + Sensor Based Sorting & Cleaning Solutions to Reduce, Reuse, Recycle.
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Theta Continuous Discharge Shot blasting Magnetic Sweeper is specifically designed for heavy use by shot blasters who need to pick up steel shot of all sizes.
The Theta is light and easy to use so you can get the job done faster. This sweeper is so easy to use that it turns an undesirable job into one that no one minds doing. It’s like using a power circular saw versus a handsaw.
The Theta is much lighter than most conventional sweepers because it uses rare earth magnets. It is only 21 pounds, making for less tiring work.
The Theta makes it easy to pick up, clean off and dispose of debris. It uses Bluestreak’s patented Ripwhirl Technology to continuously clean shot off its magnetic drum and deposit the shot into an on board removable debris tray as you push the sweeper.
Productivity is greatly increased due to the elimination of the clean off and the pickup efforts associated with conventional magnets.
The Theta reduces clean up times by 40% making it almost twice as fast as traditional magnetic sweepers.
$1,509.99
See Pricing For All Models Below
$1,509.99
| Theta Series | Theta 25 |
|---|---|
| SKU | TH25 |
| Sweeper Width | 25″ |
| Ground Clearance | 0.150 inches at lowest fin point |
| Cleaning Method | Automatic Continuous Discharge |
| Lifting Weight (using 2.5″, 8 penny nails) | N/A |
| Height Adjustability | None |
| Housing Construction | High Impact PVC |
| Wheels | Front 5″ and rear 3″ Thermoplastic rubber, non-marking with sealed precision bearings, and rugged polypropylene hubs, 5″ wheels each have a 300 lb load rating. |
| Magnetic Surface Area | N/A |
| Maximum Lifting Height | 1″ for 100% shot pickup. |
| Total Sweeper Weight | 21 lbs |
| Total Shipping Weight | 24.2 lbs |
| Shipping Dimensions | 37″L × 9″W × 9″H |
| Maintenance | None |
| Accessories | None |
| Pricing Range | $$1,509.99 |
There are no CAD Drawings.
Theta Continuous Discharge Shot blasting Magnetic Sweeper always has full pick up strength because the shot is continuously removed from the magnet. Using Ripwhirl Technology the shot is continuously cleaned off the magnetic drum and deposited into an on board removable debris tray as you push the sweeper.
“… picks up everything… shot, floor sweepings, and dust… and parts that have fallen on the floor that are scrap.. “
Blount International Demo
Blount International
The Theta Continuous Discharge Shot blasting Magnetic Sweeper is a super strong but light magnet. It is the lightest continuous discharge sweeper of Bluestreak Equipment’s continuous discharge models.
It is much lighter then most conventional sweepers at only 21 lbs. It is lighter weight because it uses super strong rare earth magnets for lifting power. Because the magnets are very strong there is no need for a huge, heavy magnet assembly. This lighter weight makes for less tiring work for anyone pushing the sweeper.
The super strong N42 rare earth magnets also have exceptional pickup power allowing the Theta to pick up 100% of steel shot out of cracks 1” deep. This allows you to thoroughly clean cracks and expansion joints which results in less shot showing up in the finished floor coating which has a direct effect on the quality of the finished floor. It can pick up shot from deeper cracks but gets a smaller percentage of it as the depth increases.
The Theta features Bluestreak’s patented Ripwhirl Technology to continuously clean shot off the magnetic drum as the drum rotates. The shot is automatically deposited into an on board removable debris tray as you push the sweeper.
The debris tray holds approximately 22 lbs of steel shot. Because the drum continuously cleans off the magnet, you always have full pickup strength increasing the effectiveness of shot pickup. This eliminates going over the same area multiple times to get all the shot.
Productivity is also greatly increased due to the elimination of the clean off and pickup efforts associated with conventional magnets allowing a 40% reduction in clean up time over conventional magnetic sweepers making it almost twice as fast.
Easily remove the on board debris tray and get rid of the shot that has been collected. It’s easy to see when the tray is full and when it’s full the handle is easy to grab and you just dump it into whatever you want. The debris tray holds approximately 22 lbs of steel shot.
The bearings in the wheels are sealed precision bearings. If you get shot or dust near the wheel area there is no way anything will get inside and nothing will get damaged. The wheels are made of soft non-marking Thermoplastic grey rubber so they won’t leave any marks on floor surfaces.
The Theta uses N42 rare earth magnets that won’t lose their strength over time and are permanently charged.
Because of the rare earth magnet power, the Theta picks up 100% of steel shot from 1″ below the wheels. This means it can pick up 100% of steel shot out of cracks 1″ deep. It can pick up shot from deeper cracks but gets a smaller percentage of it as the depth increases. This allows you to thoroughly clean cracks and expansion joints which results in less shot showing up in the finished floor coating which has a direct effect on the quality of the finished floor.
A customer recently sent us a bag of fine metal shaving debris from a shot blasting site. He wondered how the Theta would perform picking up this very fine dust. We get asked this question a lot so we decided to put the Theta to the test in this video.
Theta Shotblasting Magnetic Sweeper is designed and built to last with an aluminum welded construction and high impact PVC magnetic housing. Because of the quality of its design and construction and the availability of replacement parts when needed you can keep your Theta going for years resulting in lower long term costs of ownership compared to many cheaper magnetic sweepers.
The Edger accessory further increases the pickup power and efficiency of continuous discharge magnetic sweepers. This accessory uses a spinning finned disc with internal rare earth magnets to pull shot up and away from walls or edges and throws the shot in front of the main sweeping drum so it can be picked up and deposited into the onboard bin. The Edger works with the Fusion and Theta models and simply bolts onto the side of the sweeper, it can be folded up and out of the way for easy transport and eliminates the need for sweeping shot away from walls or edges when cleaning up after shot blasting. Theta and Fusion models purchased before February 1st 2024 can be retrofitted with the edger attachment using part # 8 available on the parts page.
On the front of this Theta magnetic sweeper, we have our new edger accessory, and you’ll see on the side of the edger there is just a wheel. So this rubberized wheel acts against the wall as you push the main sweeper along, and you probably saw the fins on the bottom there. What those do is, there’s little magnets inside, and then the fins throw the shot that’s up against the wall out in front of the main magnet assembly so it can get picked up and deposited into the onboard bin.
This unit works with the Fusion and the Theta, and you can see it in action there—it spins and then throws the shot out in front of the main sweeper so it can get collected. We’ll just get a shot up against the wall there to see if there’s anything left. Doesn’t look like it. Looks like it all got picked up on the first try.
So this just extends the functionality of your existing magnetic sweeper by allowing you to get up against the walls, and it prevents you from having to use a broom to sweep the shot out from the wall. Here’s a bit of a closeup on how the edger actually works. We’ll try to get even closer here with it. On this edge, there’s a thermoplastic kind of rubberized piece that spins the wheel, so when you’re pushing this thing along a wall, this is going to be hitting the wall, ideally, and that gives you the spinning action which will pick up any shot that’s up against the wall and throw it out in front of this main sweeper housing so it can get picked up and put into the bin.
On this drum, or on this wheel, there are some rare earth magnets—I believe there’s four or three on this one. So there’s three of different sizes that allow you to pick up the shot from up against the wall, and then it releases them as you spin the wheel and throws it in front of the main sweeper. Again, I’ll just kind of drop some shot on there so you can see how it works. It looks like the magnets are here, here, and here, and then as this is spinning and you’re pushing against the wall, the fins kind of throw it off in front of the main housing so you can get it picked up and put into the bin.
As you can see, this thing flips up and out of the way, so if you’re just transporting this thing, it’s not as long and it’s a little easier to maneuver. Then you’ve got a little wheel here that just keeps the correct height, so it’s a set sweeping height. You can’t adjust it at all; it’s set at, I believe, 38 or 37 mm off the ground. So this wheel just maintains that sweeping height and these magnets are set up to have the optimal pickup power in that height range.
Again, as you’re pushing the sweeper along, this wheel is going to be rubbing against the wall as you push it, and then that throws all the collected debris from the edger out in front of the main magnet so it can get picked up and put into the bin as per usual.
This is going to work with the Theta and Fusion models. The new models of Theta and Fusion, as of whenever this goes online, will have holes pre-drilled in these side pieces to mount this to. If you have an older model and want to attach this edger to it, you just have to get the new parts, which are part number eight, and they’re just going to have the proper holes drilled in it.
The edger is actually a useful accessory for the Theta magnetic sweepers. You can see I dropped some shot down here on the ground, and it’s right up against that garage door, so that’s going to be impossible to get with just the Theta magnetic sweeper on its own. If you didn’t have the edger, you’d have to go along here with a broom and sweep it up manually, and then get it in front of the sweeper.
Just to show this, I want you to watch the drum on the Theta while I’m pushing it along. I’ll get it up as close to the wall as I can, and you’re going to see there’s a bunch left behind at the end because the edger is not getting used. So we’re picking up all that metal there, but you can see there’s a bunch of shot left over right up against that edge of the wall. It’s probably difficult to see, but there it is.
So now we run through with this edger down, run that up against the wall, and collect the rest. So the edger is picking up all of that debris right from against the wall and throwing it—you can see it getting collected here on the back of the drum, probably, hopefully. So that allows you to get a 100% clean surface. As the edger rotates, it’s picking up the metal and then throwing it in front of the main housing, and you’re left with a perfectly clean edge.
You saw how much was left when I just went through with the sweeper. Now I went through with the sweeper and the edger, and we got a perfectly clean edge. I don’t have to come back with a broom or anything. So that’s the point of the edger—just takes all the shot from against the wall, throws it in front of this drum, you’ll see it’s all accumulated there, and allows you to do 100% clean.
The Theta and Fusion Shotblast Magnetic Sweepers can be used with the Edger accessory to collect shot from up against walls without having to use a broom. The Edger works by using a wheel which spins a finned disc around a vertical axis with internal rare earth magnets behind the disc that collect the shot which then gets thrown from the spinning force into the path of the main continuous discharge magnetic sweeping assembly so it can be collected into an onboard bin. Another advantage of using a continuous discharge magnet with an Edger over the standard magnets is that the onboard debris bins can be removed and dumped back into the shotblaster hopper. The following videos show the advantages of using the Theta or Fusion magnets with an Edger.
On the Station Land Parcade shotblasting jobsite in Edmonton, local operator Fabian had the chance to use both continuous discharge setups with the Edger XL and Edger accessories, after the job was done, we asked him what he thought about the two setups and give us his thoughts about which system works better.
We’re here at the Station Lands project at the Epor building. We’ve got two of our magnetic sweepers here: the Edger and the Edger XL. They’re mounted on two of our existing continuous discharge sweepers. We’re here at the parking facility, and we’re going to do some cleanup of the steel shot that’s left over after the concrete surface prep.
So this was the old method of picking up the steel shot that was left over from the shot blasting machine. Fabian, the worker here, would use the Bora magnetic sweeper, and he’d pick up all the steel shot on the ground. He’d pick up as much as he could collect, and then he’d drive it over to a mat that’s laying on the ground to deposit it all, to dump back into the bins. Now, this method was only used because there was no way for the Bora to be dumped, or for all the debris in the Bora to be dumped into a bin which then could be dumped back into the hopper.
So you can see he just dropped the shot onto this flexible pad. He’ll now grab the bucket that contains all the shot, and he’s going to fold up the mat and dump everything back into the bucket so it can be reused. As you can tell, this is a super time-intensive process, and if you can imagine the scale of the parking garage, this takes a long, long time.
All right, so I’m here with one of the workers that are using these magnetic sweepers to pick up all the shot after shot blasting operations. So previously, they used this Bora model to pick up all the steel shot that was left over after blasting. So they’d come in, and they’d go up to a wall, and they’d have to do this repeatedly to collect all the steel shot. Now, this is a very time-intensive process and was not efficient at all.
So now we’ve got these two models here, the Edger and the Edger XL, that we’ve offered. It uses a continuously rotating disc that rides right along the wall, so as you’re sweeping, it’ll pull shot into the path of the continuous discharge sweeper, which then can be picked up and put into the bins. Same principle works on both sweepers—this is just a smaller drum for the Edger, and this is a larger drum for the Edger XL.
So I wanted to ask you, which one of these models do you prefer?
As for me, I prefer this one, yeah, because it saves more time, and then it’s really easier to work with it.
That’s good. So the difference between these two is that that one, it’s hard to remove shot in the corners, yeah, but with this one, it’s a little bit easier too.
Okay, because it’s almost the same model as this, but again, this one, the front part, the front tire, sometimes it can’t touch down, and it can’t give you the opportunity to grab all the shots that you need to grab.
So sometimes this model will leave a little bit of shot right up against the wall?
Yes, sir.
Okay, now, is that normally when there’s lots of shot right up against the wall, or does it work better when there’s less shot, or is it all the time that it’ll just leave a little bit?
First of all, it doesn’t work well when there are a lot of shots. When we have a lot of shots, the place to grab the shots is small, and then within a second—two seconds—this one is full, full, yeah, so it doesn’t give you really much opportunity to do the work the way you need to do.
So, yeah, and that’s why you would recommend, then, the larger model, so that there’s a larger bin which allows it to collect more shot, there’s a bigger drum, so it can collect more and bring it into the sweep path.
That’s right.
Okay, great to know.
The Site Project Manager at the Station Land Parcade shotblasting jobsite shared her thoughts about the continuous discharge magnetic sweepers from Bluestreak Equipment and how they compare to the Bora. The efficiency of having the Edger or Edger XL attached to a continuous discharge magnet allows operators to avoid having to use a broom to get shot out from against walls and back into the shotblasting machine.
All right, I’m here with Kayla, the field coordinator at Proon Systems. She originally reached out to our sales team to inquire about a product that would solve her issue. So, when they shot blast concrete floors, there’s typically still shot left all over the concrete floor. Now, in the middle of the floor, it’s not so much of an issue, but up against walls and corners, especially in these parking structures where there are big columns, it’s typically hard to get a sweeper in to pick up shot right up against an edge. So, we’ve developed two products here—the Edger and the Edger XL—that solve these problems. Both can be ridden right up against the wall during normal sweeping, and they’ll pull the steel shot into the middle of the continuous discharge path. The continuous discharge magnet will cycle and pick everything up and deposit it into the bins.
So Kayla, overall, what is the sort of worker feedback on using these sweepers?
The workers are very happy with the new sweepers. The way that they’re able to maneuver them, the way that the shot falls into the tray—they’re able to just pick up the tray and load it out that way. The workers have been very happy with them.
That’s great to hear. So, I was talking to Fabian earlier and he mentioned that the Edger XL was a far superior product, and that’s one of the reasons—it’s got four magnets inside the central rotating drum, so it’s got greater pickup strength, a larger surface area, and it can get right up against that wall and pick up all the steel shot. That’s one of the higher-end products. The lower-end product would be this Edger, which works exceptionally well as well. It still pulls shot, but just not as great an amount, and sometimes it can get collected around the drum there, with a bunch of steel shot up against the wall.
All right, so in terms of overall efficiency of operations, how have these sweepers helped you compared to the old Bora model?
I find the sweepers are just very—they pick up every little bit of shot, so we’re not having to do multiple passes with the unit, like with some previous magnet sweepers we had used. And then, yeah, the ability to pick everything up in the tray—we’re not having to dump everything or sweep it up into a pail. It’s kind of just easy to pick up in the tray and redeposit back into the shot blaster.
Great. So Kayla, is there any other sort of uses for these continuous discharge magnetic sweepers in your field of work?
Well, right now we’re using them in any kind of big open area where we have concrete surface prep to do—mostly in parkades is where we’re seeing that happen. But we’re able to use the magnet sweepers there. We do the concrete prep on balconies as well for our coatings, but we’re not able to use the shot blaster on the balconies because we don’t want to risk the shot going over the edge, so we’re not able to use them in that application. We’re doing more of a hand grinding technique, but any sort of big open parkade area, plaza areas, we’re able to do the shot blasting and use the magnet sweeper after.
Great, fantastic. Okay, and last question—would you recommend any of these products to a shot blasting company?
Absolutely, absolutely. Yeah, these have been great. We’ve gone through—I mean, I’ve been working for the company for 8 years now, and we’ve been doing shot blasting all that time. We’ve been using a lot of the, maybe, more economical magnet sweepers, the cheaper ones that we’re seeing in some of the hardware stores, and they just weren’t working very well. So having these in our life has made things a lot more efficient, easier. So yeah, I would definitely recommend them and we’ll continue to use them.
Great, thank you so much.
Awesome, you’re welcome.
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We have two of these, they’re useful.
Works well, designed and made well; comes disassembled, went together in 30min with good instructions. Only downside/liability is the plastic cylinder critical to operation (mine came cracked 2″ on the edge, likely from a bump in shipping). The essence of the tool is this ribbed cylinder which is also the only non-metal part (except wheels and plastic rod sheaths under the removable tray. Cylinder could be damaged by something falling on it or an employee smacking it into an exposed bolt in the floor. Very expensive but saves from having to drop & pick up piles of steel shot. If it lasts forever it’ll be worth it as a necessary business tool; if I have to replace the cylinder I’ll wish I’d bought the all-metal BORA model.
The magnet has done a great job. Picks up shot, floor sweepings and dust and parts that have fallen on the floor that are scrap.