homemade belt sander rollers. - First mark the measures of the sander on horizontally, vertically and dead flat position on the plywood for the base and two sides for the vertical part of the stand. homemade belt sander rollers

 
 - First mark the measures of the sander on horizontally, vertically and dead flat position on the plywood for the base and two sides for the vertical part of the standhomemade belt sander rollers  Step 3: Make the main grinder arm

Building the Vertical 1" Belt Sander. The Inner Pieces are 1 1/2 inch Square Tubing 3 Pieces One 17 inches long and two 15 inches long. Belt Grinder by Jonathan. A wide-belt sanding machine. Roller stand - video by imohtep56 on 2023-10-30 17:05:08 ; NASCAR pitstop crew POV - GIF by Karl_H on 2023-10-30 16:41:08 ;For the drive wheel, Wandel cuts up an inner tube that he bought. The pulleys are crowned. 5. Dual Belt Grinder and Sander by: garycullen. We need two of this rollers to create a rolling belt drive system. Step 4: Make Upper Body Frame. . Check Price on Amazon. 2 rubber-covered pinch rollers 2 ½” OD. Claim offer. L-100 - Belt Linisher Sander. The actual “platen” is a rotary belt under tension with rollers. Cheap DIY Belt Sander 4. Check the rollers and platen for dust and debris. I show you how i made belt sander DIY using angle grinder deWalt. Slide conveyor belt<br /> to one side of bed. Be sure to use a level when attaching the sandpaper so that it is straight. 75. Sorted by: 1. RATING: (0) Post a comment login / register. I plan on using the same. . 1970 Gilbern T11 concept car - photos by sossol on 2023-11-14 16:29:30 ; astronaut loses $100,000 tool bag during spacewalk by hemmjo on 2023-11-14 15:41:59 ; Destroying a Nokia phone with a grenade - video by verticalmurph on 2023-11-14 15:12:05 ; Crop duster near miss with semi - GIF by. Hi, The 4" belt sander was the first I made and again it's a very simple design being built around offcuts I had to hand so cost nothing other than time in the workshop; I have both metal and woodturning lathes; this sander has turned wooden rollers the rollers on both machines being slightly crowned to aid belt tracking. I then welded up a steel frame with steel legs and fastened the treadmill to it. One of these side will swing and let you change the sander to dead flat position. One trick is to mount the motor to a hinged plate, which is. Abrasive belt grinders and sanders come in a variety of different sizes for deburring, shaping, sanding, polishing, grinding, sharpening, cleaning, and de-scaling metal. Then you would have to figure out how to set the wood straight down on the sander and pick it straight up. Heavy duty adjustable roller stand - video by Jon on 2023-11-01 14:34:17 ; Dovetail jig - video by Jon on 2023-11-01 14:33:51 ; Forged pickaroon. First, find the height limit switch and remove it, then start the machine and carefully raise the table so the wide belt sands off the slippery belt. I am think along the ideas of a 1-2 inch wide belt probably 35-40 inch long belt. 1. In the. A crowned pulley is a pulley that has a slight hump in the middle, tapering off ever so slightly towards either edge. Be careful not to cut too fast. It uses a 4 x 24 inches sanding belt that enables you to sand bigger areas in minimal time. Mar homemade belt sander rollers 22, 2013 · That would indeed be a huge problem! It was a real pain to get one belt to track properly. It needed some tweaking to make it better. There are various causes of improper tracking, which we’ll cover in the following section on wide belt sander maintenance. This won't be a DIY 2x72 belt grinder, but the cost is minimal, sometimes even free. Username: Password: OR Register. A narrow belt sander is a multipurpose tool that’s ideal for woodworking tasks as well as metalwork. by Suso | Oct 5, 2017. Sanding Disc sands, smooths and deburrs jagged edges and splinters on your wood and lumber. 6x48" belt sander build. 09. I used pretty much the same method to make the idler roller, except that the idler roller has a diameter of 6 cm. Nov 28, 2017 - Homemade belt sander fabricated from steel, aluminum, threaded rod, and roller skate bearings. Type: Portable | Power: 11 amps | Power Source: Corded | Top Speed: 1,640 feet-per-minute | Belt Size: 4 inch by 24 inch. Use a. Four lockable casters will make it easier to roll out, and two drawers underneath will keep all the accessories. I have been looking for a 2x72 belt grinder for a while now. Source: Uneeda. . plywood strip as shown to elevate the sander body. And be sure to spin the shaft with a drill, not by hand! And use a table saw sled . The manufacturing capabilities allow for a diameter range from 1 to 94” and up to 300” long. Now, slide the pulley in and tap it against the collar. Max. Whether planning a big group surprise or purchasing for your boutique, we have a large selection of wholesale purses and handbags to choose from. Normally, when a belt sander begins making noises it is a good indication the belt needs to be changed. Sort by: Newest; Popular; Builder; Title; Belt Sander and Bandsaw by dhallilama. This are an in-depth overview of how to make a belt sander. The G0767 also includes a 4-1/2" x 15-3/8" platen and work stop for flat sanding operations. Add Tip Ask. Followers 0. I have a protractor head for the sanding disk. 50 and cheap is $1. ES285X when using any type of power tool. He chose the latter, and turned an angle grinder into a belt sander. Let's check out website for all major details: channel - cra. It should also be wide. When the belt goes around the roller it is subject to delaminating sheer stresses but there is a lot more surface area to hold than a short seam. This belt sander is one of the fastest devices in this list. There are various causes of improper tracking, which we’ll cover in the following section on wide belt sander maintenance. Homemade Belt Sanders and Grinders tools. While they were still on the threaded rod, I put them in my metal lathe and then used emery cloth to smooth them out/crown them. URL:. Use some rubber strips to line the roller. Price at time of publish: $250. Then reinstall the limit switch and get yourself a good quality digital caliper. Available for order through our sister-site, MRP Bike. HOW TO BUILD CHICKEN COOPS. Weigh boxes as they flow through your conveyor line to reduce bending and lifting. Homemade belt sander powered by a 3400 watt motor. Between the rollers there is a 1. I needed them to have a small diameter, so I decided to use. It can also be utilized in sanding a concrete floor. Brass Kant Twist Clamp by: jjr2001. . 50 and cheap is $1. If the inside of your sander has a lot of dust, such as in the photo above, or you’re experiencing finishing issues like lines on the work piece; premature wear of the belt; or burning, you may have high static electricity, low airflow (CFM) in your machine, or a faulty dust extraction system, all. RATING: (4) Post a comment login / register. LEVEL OF DETAIL (1-5): 3. Despite this sander being old American iron, this bearing is a metric-SAE hybrid. DIY Bench Grinder to Belt Sander Conversion. Eight of these. Belt Size: 2” x 42” belt sander and 6” bench grinder. The approach was simple, The structure is made out of 6mm thick metal sheet. I have the need to build a belt sander and have looked at many on the internet; your's is the 1st one to "flop my mop". Today i will be making a belt sander roller for my next project ( Angle Grinder Belt Sander. Precise miter gauge for angle sanding. The "-10" at the end of its name designates its inner diameter as 5/8-inch, while its width is 15mm, and its outer diameter is 35mm. I even have a detailed instructable on how to make the drum and rollers Once you’ve got this complete, you could cut the plywood for the body. 18. Homemade Belt Sanders and Grinders (355) Click here for tool plansGet 2,000+ tool plans, full site access, and more. The top idler wheel. <br /> 4. For example, if you have a 10″ lathe and the measure is 5-1/4″, you’ll need to shorten the parts by 3/4″ (6″- 5-1/4″ = 3/4″). Table of Contents. You can get them in a variety of shapes/sizes, in a variety of grippy materials. Around a good belt is $2. Find the lever on the side of the belt sander below the body. Please select 46425A999 and specify wheel diameter and width, arbor size, and rubber hardness. What You'll Need: • A Belt sander. It proved to be more challenging that I thought, but I learned a lot doing it. The belt rolls over the outer surface of our hub motor and the sanding disc is attached to the face. 12:28 video:UPDATE: Check out the New 2x72 DIY Build Design Here: to 2x72 Belt Grinder Plans VFD (To Control t. Woodworking Hand Tools. More orbits means the tool moves faster, giving you less control while in use. Power file from angle grinder, angle grinder hack - call as you want! For me, this is a very useful homemade attachment to my angle grinder. Remove the belt sander’s plug from the power source and turn off the electricity. Subscribe. Tracking (How straight the belt runs on the sander) was also adjusted and then the sander, running at full speed, was brought into contact with the board for 10 seconds. Another great technique is to. 40 Plans for Homemade. The difference between a planer and a thickness sander is that you can run planks that have been glued up in different grain orientations on the sander and it will not be destroyed. I would get it all set and running true and then, all of a sudden, it would take off to the side for no apparent reason. 42” Two-head wide belt sander. Please like, share, subscribe my channel to. 5 HP motor with infinitely variable speed control. Referring to the plans above; note the 4 main components to this belt sander. tags: belt grinder. “When using a belt sander, pay particular attention to keeping the sander even as you work. tags: belt grinder, motor. They seem to go a little longer before they break when I do that. Like what is the idea rpm for a belt sander. The crowning of the sanding belt is discussed under topic #7 "Crown the belt" on page 15 of the 6" Belt Sander Manual 555355. It sort of tops off the whole design with a ridiculous overkill clamshell opening system, and a shipping container latch designed for aerospace. Mini roller compactor boat loading fail - GIF by Altair on 2023-11-16 20:27:01 ; Editing people out of photos by hand. Price at time of publish: $250. February 12, 2019. Check out the Youtube video. Belt sander components. Firmly mounting a portable tool for use as a fixed tool is a well-used trick of the homemade tool builder, and applies to many different tools. Username: Password: OR Register. Drum Sander. Support me on Patreon: Project no. $1279. ). Brass Kant Twist Clamp by: jjr2001. Roller stand - video by imohtep56 on 2023-10-30 17:05:08 ; NASCAR pitstop crew POV - GIF by Karl_H on 2023-10-30 16:41:08 ; BuildThreads Network:The length from start to finish will be 30 feet. They both fasten to the base plate and are located by a key. Youll also need a steel rod to use for the idler rollers shaft. Makes it almost as good as new! I bought my friend's sole for a nickel and have been putting it to good use since. . Gather some matching shafts and bearings. 1K subscribers Subscribe 120 Share 36K views 9 years ago In this video I show how I cut the blanks out for the wheels for the belt sander. 10 most expensive women's handbags in the world - TIM. Within the 3-in. Recently, a talented CAD user (who was building a grinder off my plans) was courteous enough to model the grinder and each part within a CAD platform. Step Four: Mount the motor on one end of the frame and attach the pulleys and belts on the other end. 1/3 HP motor for up to 1775 RPM (disc) / 1165 SFPM (belt) Table tilts 0-90° for easy operation. Bridge inspection platform - photo by Altair on 2023-11-10 08:14:02 ; Screw roller concrete screed - GIF by Hoosiersmoker on 2023-11-10 06:53:29 ; Boat race in bad weather - GIF by Altair on 2023-11-10 06:07:01 ; Train smashes SUV stopped on level crossing - GIF by hemmjo on 2023-11-10 05:52:18 ;. Secured with contact cement this works well. . . Let's take a look at out website for all principal information. 41 & FREE Shipping. . Don’t apply extra pressure while sanding. Now it is ready to use. Sander is powered with a Dremel 4000 rotary tool wich can be removed after use. Drum sanders and edging sanders are the two types of floor sanders. RATING: (0) Post a comment login / register. - First mark the measures of the sander on horizontally, vertically and dead flat position on the plywood for the base and two sides for the vertical part of the stand. Here's our curated selection of articles and forum discussions of standard belt sander builds (videos, plans, and miscellaneous other belt sander builds are further below). . Get 2,000+ tool plans, full site access, and more. Best Overall: Makita 9403. If your belt has not been tracking correctly on your machine, it will slide off its rollers or become misaligned during operation, which will likely lead to a tear. Get 2,000+ tool plans, full site access, and more. Wavy Surface 3. Make sure belt rotates in correct orientation with respect to lapped seam edges. 2x15in Electric Belt Sander for Knife Making Upgrade Knife Sharpening Belt Sander with 15PCS Abrasive Belt for Wood Metal Knife Leather Woodskil Professional 4. kmpres. I bought one of these several weeks ago to deburr parts and to sand the ends on some parts I rough mill a radius on. class, there are smaller tools that take 3- x 18-in. Bosch PBS 75 Belt SanderHomemade Belt Sanders and Grinders (355) Click here for tool plans. DIY Multifunctional Adjustable Belt Sander Grinder - MWIG #4Frequency Inverter:to buy Belt Sander?US:. Our Experts Say. [Matthias Wandel] is the preeminent YouTube woodworker. Apr 30, 2014 4:55 PM . Shop MISUMI for all your Belt Sanders (Pneumatic) and Pneumatic Tools needs. Best Benchtop Belt Sander – Bucktool Combo BG2600. Before you screw the 2nd side on, you need to place the conveyor ( a big sanding belt ) over the platen. A belt sander attachment (2) is disclosed for a portable drill or the like (4), for sanding curved or flat surfaces. In stock and ready to ship. Check Latest Price. The quick-release belt mechanism makes belt and roller changes fast and simple. Sander Drum Roller by Wooden Tool Man. In this video I show how I cut the blanks out for the wheels for the belt sander. Homemade sander drum roller build method consisting of an MDF jig and a 4" hole saw attached to a drill press. The Makita 9403 has a 4-inch by 24-inch belt making it ideal for sanding big space. 00 with. 50 and cheap is $1. Another great technique is to. Sort by: Newest; Popular; Builder; Title; Belt Grinder and Sander by TheArsonSmith4242. Manually assembling roller chain links - GIF by Altair on 2023-01-18 20:27:01 ; DIY Belt Sander - comment on how to build a Belt Sander - 0 commentsThe 43″ Wide Belt Sander features a 75” belt, providing 25% more abrasive surface than the smaller 60” belt machines. Step Five: Attach the sandpaper to the frame using screws or nails. A stationary belt sander is a power tool that utilizes a high-speed, continuous belt looped over two drum rollers to quickly sand wood, metal, plastic, and other materials. Username: Password: OR Register. If you are looking for high quality belt grinder wheels for your knife making projects, you should check out Origin Blade Maker's product category. RATING: (0) Post a comment. 88 mm) ply to use as the bench cleat, table, and base. TOOL:. Each side is made from 1/2 inch plywood. Uses 2X48" belts. • Drill two bolt holes in each end of the mounting board, about 1″ from the end. Grab your drum and slide it into place! Probably the first exciting part of the build!Belt sanders have a substantial amount of torque, so loose-fitting clothing should be kept well clear of the sander. Homemade Belt Sanders and Grinders tools. Utilizes 5x72 abrasive belts. Like all Grizzly notchers, the G0767 comes with a 1-year warranty covering parts and assuring the unit is free from factory defects. Homemade Belt Sander. These flat belts stayed centered on pulleys without any guides or flanges. How to build a surface sander that is every bit as smooth on. homemade belt sander rollers; 102 meters to feet; jak sie wpisac do playstation network ps3; tv aufnahme auf externe festplatte; винил втора употреба. Belt Sander: - Belt size - 6" x 48" - Belt speed - 1260 ft/min - Motor size - 3/4 hp - Motor speed - 3460 rpm - Roller spacing - 20" nominal Sanding Belt tension and tracking adjustment I made this belt sander from an 8" bench-top grinder from Harbor Freight. Well, I finished my tire hammer so it's on to the next project. 7K views 11 months ago. Use a. NOTE: Cloth-backed belts should be crowned when they are new and occasionally during their useful life. Mini roller compactor boat loading fail - GIF by hemmjo on 2023-11-18 04:16:05 ; Woke physics - image by Philip Davies on 2023-11-18 02:04:54 ;Homemade Belt Sanders and Grinders (355) Click here for tool plans. Subscribe. . need to be tensioned to operate, and then relaxed to remove the. On a 9″ X 12″ sheet of. DIY: Learn a way to make a drill powered homemade belt sander. 3M File Belt Sander 33575, 18 in, 1 Per Box, File Sander for Cutting and Grinding 353 $21796 This light-weight but heavy-duty tool is right for use within. If you've been shopping around for the perfect belt sander but keep turning up empty-handed, then it might be time to design and build your own. Homemade Belt Sanders and Grinders tools. Mounting. Part of a series called Make It Extreme on YouTube, [George] built the entire project from scratch using raw materials. disc for fast stock removal. Membership Price: $16. Homemade belt sander belts (3X18) I got the idea of looking to see what it cost to make homemade sandpaper belts for my belt sander would be. 3 Common Sander Problems | 2. Simple homemade 2 position belt sander stand / belt sander station. Eight of these. This sander runs too. I came up with a design in 2012, but never got around to building it until now. . Introduction Wide belt sanding is anything but simple, so when you’re experiencing problems it can be complicated to isolate and. It includes numerous reviews on articles off building a belt sander, forum discussions (including our HomemadeTools. Improper Belt Tracking Homemade belt sander constructed from an electric motor, rollers, and 3/4" plywood. Belt sanders used on flooring comes in handheld and walk-behind belt models. Uses 6X48 sanding belts. NEW: 186 More Best Homemade Tools eBook. (The manufacturer's directions will indicate how long it takes to remove any clogs. Clamp the sander to the assembly (snug it—don’t overtighten). It is important to make a hole in the table to maintain ventilation of the belt sander, so I placed two strips of pine at the base of table. Sort by: Newest; Popular; Builder; Title; Belt Sander by Bill. UPDATE: Check out the New 2x72 DIY Build Design Here: to 2x72 Belt Grinder Plans VFD (To Control t. The driver roller is available for either a 1/2" or 5/8" motor shaft. If your belt has not been tracking correctly on your machine, it will slide off its rollers or become misaligned during operation, which will likely lead to a tear. If you’re having issues getting the. Best Benchtop Belt Sander – Bucktool Combo BG2600. Homemade belt sander fabricated from steel, aluminum, threaded rod, and roller skate bearings. Simple rodent trap - GIF by Altair on 2023-11-17 20:27:01 ; Camel shedding coat - GIF by bob_3000 on 2023-11-17 19:43:21 ; 1977 Pontiac Firebird Type K concept station wagon - photos by Frank S on 2023-11-17 19:40:47 ; Saddle types - photo by Altair on 2023-11-17 19:13:02 ; DIY Band Saw Fence by dbat74. How I made the rollers-. I then put. Utilizes 5x72 abrasive belts. Turn the sander on and let it reach the maximum speed. Nov 20, 2021 · Check our top of Louis Vuitton purses under $1,500 - these are current 2022 prices. except i use 3/4' steel pipe mounted in the lathe chuck and center with the "griptape. DIY homemade- Make a Belt Sander simple at home, do it yourself dremel toolMaterials:- Piece of wood, 4 x Water bottles, Jack DC, Switch on/off- Sandpaper, S. Digital file information. Be the first to comment on this DIY Belt Sander, or add details on how to make a Belt Sander!7 Homemade Belt Sander You Can DIY Easily In this video tutorial, you will see how this builder created his simple DIY 2 x 72 belt sander using scrap belt sander roller material from a pallet truck for rollers and wheel drive. Touch device users,. Mounted on a wheeled cart for enhanced mobility. x 30 in. You could technically only use sandpaper without any grinding/sanding tool. Seems like it could take the place of several of the other accessories. Manually digging a fish pond - GIF by Altair on 2023-10-29 15:42:01 ; Homemade An Electric Cargo Tricycle Using Huge Wheels by Jon on 2023-10-29 13:00:04 ; Chicken dodging crocodiles in enclosure - GIF by Altair on 2023-10-29 12:56:01 ; Removing temporary brick arch support - GIF by Philip Davies on 2023. feed platform to a larger 1/2-in. Grooves Conclusion Read Part 2: Machine or Abrasive Maintenance Issues Download the PDF guide, to keep as a reference near your sander. Cut the backing cloth (close weave cotton or denim) 12cm wide. . 36mm thick, driven and tension rollers - steel, drive pulley 150mm Carpentry work | Metal working | Locksmith work tools. Switch on the angle grinder. It basically consists of eight pieces. Use a piece of plastic underneath it to protect the surface you are working on. Easy-to-make Belt Sander/Grinder Wheels. The idler roller is press fitted with 2 sealed bearings and fits nicely on a 1/2" bolt. For the 11in tube you will need to cut out the top to allow the top arm to be able to fit into it. 113. Jellas 3 × 21-Inch Belt Sander with Dust Bag, 7Amp Sander Machine with Variable-speed Control, 2 in 1 Vacuum Adapter, 10Feet (3 meters) Length Power Cord BS750-SD. This will give you a new life on the conveyor belt. Improper Belt TrackingHomemade belt sander constructed from an electric motor, rollers, and 3/4" plywood. A professional-grade wide-belt sander with a compact footprint. Utilizes 2. Here are the steps to follow when building a homemade belt sander. Diy Lathe. I made a simple belt sander attachment for dremel rotary tool. Need to get a few bearings 32,214 views Nov three, 2013 169 Dislike Share Wooden Tool Man 78. Woodworking Techniques. Homemade brass Kant twist clamp Homemade belt sander powered by a 3400 watt motor. belt sander rollers To replace the belt you would have push the front roller in until the spring is compressed enough to lock into position. Adam Fabio. I use belts sold for belt sanders, cut and wrapped diagonally around the drum. With you have a strike sander build that you'd please us to add, post about computers on on homemade tools forum. Small 1×30 strip sander crafted from plywood. salvage the incline motor from a treadmill, which is used to vary. Eight of these builds include. This sander was built to sand corners or edges to fit square to the sides of another piece of wood. tags: belt sander. I did not design this -- BUT -- I made it at Tech Shop. 5 Amp 3-in X 18-in Heavy Duty Variable Speed Belt Sander (Renewed) $8911. Its speed controlling feature lets it maintain the speed under specific loads and stress. net. Subscribe. The Scoring Method - quick simple and accurate router templates by Carmonius Finsnickeri on 2023-11-05 12:58:15 ; Stage flame machine - GIF by Altair on 2023-11-05 12:56:02 ; Boiling and peeling chestnuts - GIF by meyer77 on 2023-11-05 12:24:11 ; Man intentionally gets run over by combine POV - GIF. This simple build convinced me that I should have one. Step 1: Making the Body. I made sure it was long enough to overhang the width of the belt, so as to trim it later. Page 164 of 187 173 Best Homemade Tools from HomemadeTools. Too Much Dust & Static Electricity. 1. Math being about $30 for 20-25 Yards of sandpaper (roll) and $10 for epoxy. BS-76 - Belt Linisher Sander. net forum and others), and my on buildings a DIY waist grinder or a DIY belt sander. Code: L114 $ 1,232. Around a good belt is $2. and Weld it in to place Each Piece is 13 inches long Square tubing 2X2 And 4mm thick. in 1976 and never got around to building. Homemade Belt Sanders and Grinders (355) Click here for tool plansHomemade belt sander constructed from tubing, trolley wheels, and a surplus washing machine motor. Diy Narrow Belt Sander Machine Homemade Belt Sander. Further, it’s a single belt sander but its 1640feet/minute speed guarantees fast material removal. With one piece for the base, I cut 2 uprights for the sander to stand on which gave enough room for the dust bag (I later cut out the bottom of the base to give more room for the dust bag) 2. You may have to register before you can post: click the register link above to proceed. The sander was held loosely in one hand and was allowed to slide gently from side to side about 1/2 inch to keep the paper from clogging. Utilizes 2. If you want to make a homemade sander think more on the line of a stroke sander. Compare Wishlist On Sale. Rollers. Difficult to install but, excellent quality part. Worn belts will affect the tension since the belt surface area has worn with homemade belt sander rollers use. 23K views 9 years ago. Homemade Belt Sanders and Grinders (355) Click here for tool plans. Incorrect Or Worn Contact Roller; To avoid chatter marks, use the right roller for your application. Hello Friends! In This Video I Show You How To Make Belt Grinder || Belt Sander. Step 1: Making the Body. Read all comments. Look for the arrows on the inside of the new sandpaper belt and the arrow. Elevator for roller blinds and roller shutters by DIYer on 2023-01-30 04:56:14 ; INDEX E BLOCCO MANDRINO PER TORNIO by DIYer on 2023-01-30 04:52:01 ;Apr 22, 2017 - Homemade belt sander constructed from wood boards, rollers, threaded rod, bolts, nuts, drive belts, bearings, and an electric motor. Brilliant Idea! Homemade Sander Bar Roller Conveyor - New Style Drum Sander. Dashed line along the length of the workpiece: Contaminated pressure rollers. hey guys! how practical is it to want to make a belt grinder with no welder? and if practical, any idea how much it would cost for all the materials?. The bearing on the disc sander side of the drive pulley shaft is a 6202-2RS-NR-10. . 2. I got the idea of looking to see what it cost to make homemade sandpaper belts for my belt sander would be. Apparently rubber surface had a flaw and belt sander drive roller threw a chunk of rubber from the roller rendering it unusable.