# Abrasives **URL:** https://fireball.discourse.group/c/abrasives/12.md [Latest](https://fireball.discourse.group/latest.md) · [Categories](https://fireball.discourse.group/categories.md) · [Tags](https://fireball.discourse.group/tags.md) --- ## [Which Grinding Disc Should You Buy? A Buyer's Guide Backed by Our Test Data](https://fireball.discourse.group/t/which-grinding-disc-should-you-buy-a-buyers-guide-backed-by-our-test-data/4354)
**Author:** [@Fireball-Tool](https://fireball.discourse.group/u/Fireball-Tool)\ **Replies:** 0\ **Last updated:** [July 7, 2026, 9:51pm UTC](https://fireball.discourse.group/t/which-grinding-disc-should-you-buy-a-buyers-guide-backed-by-our-test-data/4354 "2026-07-07T21:51:11Z")
We put a full rack of flap and fiber discs through the same test, on the same rig, on the same steel, and let the numbers sort them out (and made an entire video series on it). If you have ever stared at a wall of discs … --- ## [About the Abrasives category](https://fireball.discourse.group/t/about-the-abrasives-category/3080)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [December 19, 2024, 11:22pm UTC](https://fireball.discourse.group/t/about-the-abrasives-category/3080 "2024-12-19T23:22:10Z")
Let’s talk about abrasives, but keep the conversational tone non-abrasive. --- ## [Grinding Disc Tests MEGATHREAD](https://fireball.discourse.group/t/grinding-disc-tests-megathread/3061)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 71\ **Last updated:** [May 2, 2026, 3:37am UTC](https://fireball.discourse.group/t/grinding-disc-tests-megathread/3061 "2026-05-02T03:37:21Z")
Below, you can find links to view additional data and discuss every test we have released: How the machine was built, the tests were conducted & the data was collected How to fix a glazed flap disc FLAP DISCS 3M 769F… --- ## [Millner-Haufen Tool Co...lifetime grinding wheel](https://fireball.discourse.group/t/millner-haufen-tool-co-lifetime-grinding-wheel/4152)
**Author:** [@TRUG](https://fireball.discourse.group/u/TRUG)\ **Replies:** 2\ **Last updated:** [February 13, 2026, 12:17am UTC](https://fireball.discourse.group/t/millner-haufen-tool-co-lifetime-grinding-wheel/4152 "2026-02-13T00:17:05Z")
Has anyone tried these? I’m wondering if it’s that good or a scam. Maybe they bank on you never sending it back. I feel like I would wear it out in one day, but I don’t know. Maybe it needs to be put through some torture… --- ## [This is The Best Flap Disc Ever!](https://fireball.discourse.group/t/this-is-the-best-flap-disc-ever/4095)
**Author:** [@Fireball-Tool](https://fireball.discourse.group/u/Fireball-Tool)\ **Replies:** 0\ **Last updated:** [December 24, 2025, 1:04am UTC](https://fireball.discourse.group/t/this-is-the-best-flap-disc-ever/4095 "2025-12-24T01:04:21Z")
Have You Tried the Steel Savage Flap Discs Yet? We tested around 60 different flap discs and made a grinding disc performance guide. This guide tracks real metrics like cost of material removed, removal rate, and tim… --- ## [Flex Sight Max Flap Discs Get Tested!](https://fireball.discourse.group/t/flex-sight-max-flap-discs-get-tested/3579)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 1\ **Last updated:** [April 30, 2025, 2:26pm UTC](https://fireball.discourse.group/t/flex-sight-max-flap-discs-get-tested/3579 "2025-04-30T14:26:38Z")
Cost (in USD): $11.99 Type #: 29 Material: Zirconia Grit: 60 Disc Thickness: .24" Flap Length: .76" Flap Angle: 20° Flap Sum: 49 DATA --- ## [Walter XTRACUT Fiber Discs Get Tested!](https://fireball.discourse.group/t/walter-xtracut-fiber-discs-get-tested/3551)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [April 25, 2025, 12:22am UTC](https://fireball.discourse.group/t/walter-xtracut-fiber-discs-get-tested/3551 "2025-04-25T00:22:30Z")
See our test for the Walter XTRACUT fiber disc: DATA --- ## [Lehigh Valley Abrasives Flap Discs Get Tested!](https://fireball.discourse.group/t/lehigh-valley-abrasives-flap-discs-get-tested/3578)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [April 30, 2025, 2:09pm UTC](https://fireball.discourse.group/t/lehigh-valley-abrasives-flap-discs-get-tested/3578 "2025-04-30T14:09:30Z")
Cost (in USD): $6.29 Type #: 29 Material: Zirconia Grit: 40 Disc Thickness: .35" Flap Length: .23" Flap Angle: 27° Flap Sum: 75 DATA --- ## [Pearl Abrasives Co. Flap Discs Get Tested!](https://fireball.discourse.group/t/pearl-abrasives-co-flap-discs-get-tested/3577)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [April 30, 2025, 2:07pm UTC](https://fireball.discourse.group/t/pearl-abrasives-co-flap-discs-get-tested/3577 "2025-04-30T14:07:18Z")
Cost (in USD): $3.55 Type #: 27 Material: Zirconia Grit: 40 Disc Thickness: .47" Flap Length: .99" Flap Angle: 30° Flap Sum: 86 DATA --- ## [Metabo Flap Discs Get Tested!](https://fireball.discourse.group/t/metabo-flap-discs-get-tested/3576)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [April 30, 2025, 2:05pm UTC](https://fireball.discourse.group/t/metabo-flap-discs-get-tested/3576 "2025-04-30T14:05:42Z")
Cost (in USD): $2.74 Type #: 29 Material: Alumina, Zirconia Grit: 40 Disc Thickness: .22" Flap Length: .73" Flap Angle: 23° Flap Sum: 60 DATA --- ## [Kimball Midwest Flap Discs Get Tested!](https://fireball.discourse.group/t/kimball-midwest-flap-discs-get-tested/3554)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [April 25, 2025, 12:27am UTC](https://fireball.discourse.group/t/kimball-midwest-flap-discs-get-tested/3554 "2025-04-25T00:27:57Z")
Cost (in USD): $20.74 Type #: 29 Material: Ceramic Grit: 40 Disc Thickness: .43" Flap Length: .69" Flap Angle: 26° Flap Sum: 71 DATA --- ## [WORKPRO Flap Discs Get Tested!](https://fireball.discourse.group/t/workpro-flap-discs-get-tested/3553)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [April 25, 2025, 12:26am UTC](https://fireball.discourse.group/t/workpro-flap-discs-get-tested/3553 "2025-04-25T00:26:23Z")
Cost (in USD): $1.69 Type #: 29 Material: Alumina, Zirconia Grit: 40 Disc Thickness: .25" Flap Length: .66" Flap Angle: 20° Flap Sum: 70 DATA --- ## [New York Skilcraft Flap Discs Get Tested!](https://fireball.discourse.group/t/new-york-skilcraft-flap-discs-get-tested/3552)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [April 25, 2025, 12:24am UTC](https://fireball.discourse.group/t/new-york-skilcraft-flap-discs-get-tested/3552 "2025-04-25T00:24:33Z")
Cost (in USD): $4.86 Type #: 27 Material: Alumina, Zirconia Grit: 40 Disc Thickness: .34" Flap Length: .73" Flap Angle: 28° Flap Sum: 72 DATA --- ## [Pferd Victograin Fiber Discs Get Tested!](https://fireball.discourse.group/t/pferd-victograin-fiber-discs-get-tested/3305)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [January 28, 2025, 6:07pm UTC](https://fireball.discourse.group/t/pferd-victograin-fiber-discs-get-tested/3305 "2025-01-28T18:07:58Z")
See our test for the Pferd Victograin fiber disc: DATA --- ## [Pferd Fiber Discs Get Tested!](https://fireball.discourse.group/t/pferd-fiber-discs-get-tested/3267)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [January 17, 2025, 12:04am UTC](https://fireball.discourse.group/t/pferd-fiber-discs-get-tested/3267 "2025-01-17T00:04:34Z")
See our test for the Pferd fiber disc: DATA --- ## [Norton RazerStar Fiber Discs Get Tested!](https://fireball.discourse.group/t/norton-razerstar-fiber-discs-get-tested/3304)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [January 28, 2025, 6:07pm UTC](https://fireball.discourse.group/t/norton-razerstar-fiber-discs-get-tested/3304 "2025-01-28T18:07:07Z")
See our test for the Norton RazerStar fiber disc: DATA --- ## [Hercules Fiber Discs Get Tested!](https://fireball.discourse.group/t/hercules-fiber-discs-get-tested/3302)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [January 28, 2025, 6:04pm UTC](https://fireball.discourse.group/t/hercules-fiber-discs-get-tested/3302 "2025-01-28T18:04:37Z")
See our test for the Hercules fiber disc: DATA --- ## [Black Hawk Abrasives Fiber Discs Get Tested!](https://fireball.discourse.group/t/black-hawk-abrasives-fiber-discs-get-tested/3266)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [January 17, 2025, 12:00am UTC](https://fireball.discourse.group/t/black-hawk-abrasives-fiber-discs-get-tested/3266 "2025-01-17T00:00:58Z")
See our test for the Black Hawk Abrasives fiber disc: DATA --- ## [Benchmark Fiber Discs Get Tested!](https://fireball.discourse.group/t/benchmark-fiber-discs-get-tested/3303)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [January 28, 2025, 6:05pm UTC](https://fireball.discourse.group/t/benchmark-fiber-discs-get-tested/3303 "2025-01-28T18:05:55Z")
See our test for the Benchmark fiber disc: DATA --- ## [Bauer Fiber Discs Get Tested!](https://fireball.discourse.group/t/bauer-fiber-discs-get-tested/3257)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [January 14, 2025, 4:05pm UTC](https://fireball.discourse.group/t/bauer-fiber-discs-get-tested/3257 "2025-01-14T16:05:05Z")
See our test for the Bauer fiber disc: DATA --- ## [3M Cubitron II Fiber Discs Get Tested!](https://fireball.discourse.group/t/3m-cubitron-ii-fiber-discs-get-tested/3306)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [January 28, 2025, 6:09pm UTC](https://fireball.discourse.group/t/3m-cubitron-ii-fiber-discs-get-tested/3306 "2025-01-28T18:09:28Z")
See our results for the 3M Cubitron II fiber disc: DATA --- ## [Weiler Tiger X Flap Discs Get Tested!](https://fireball.discourse.group/t/weiler-tiger-x-flap-discs-get-tested/3193)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [January 3, 2025, 12:50am UTC](https://fireball.discourse.group/t/weiler-tiger-x-flap-discs-get-tested/3193 "2025-01-03T00:50:00Z")
Cost (in USD): $8.39 Type #: 29 Material: Alumina, Ceramic Grit: 40 Disc Thickness: .35" Flap Length: .81" Flap Angle: 24° Flap Sum: 70 DATA --- ## [Warrior Flap Discs Get Tested!](https://fireball.discourse.group/t/warrior-flap-discs-get-tested/3168)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [December 30, 2024, 3:14pm UTC](https://fireball.discourse.group/t/warrior-flap-discs-get-tested/3168 "2024-12-30T15:14:52Z")
Cost (in USD): $3.99 Type #: 29 Material: Alumina Grit: 36 Disc Thickness: .24" Flap Length: .61" Flap Angle: 26° Flap Sum: 72 DATA --- ## [Walter ENDURO-FLEX TURBO Flap Discs Get Tested!](https://fireball.discourse.group/t/walter-enduro-flex-turbo-flap-discs-get-tested/3195)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [January 3, 2025, 12:52am UTC](https://fireball.discourse.group/t/walter-enduro-flex-turbo-flap-discs-get-tested/3195 "2025-01-03T00:52:32Z")
Cost (in USD): $8.53 Type #: 29 Material: Ceramic Grit: 36/60 Disc Thickness: .31" Flap Length: 1.01" Flap Angle: 17° Flap Sum: 50 DATA --- ## [Walter ALLSTEEL TURBO Flap Discs Get Tested!](https://fireball.discourse.group/t/walter-allsteel-turbo-flap-discs-get-tested/3171)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [December 30, 2024, 3:20pm UTC](https://fireball.discourse.group/t/walter-allsteel-turbo-flap-discs-get-tested/3171 "2024-12-30T15:20:52Z")
Cost (in USD): $4.29 Type #: 29 Material: Zirconia Grit: 40 Disc Thickness: .22" Flap Length: .98" Flap Angle: 8° Flap Sum: 40 DATA --- ## [Trivd Frol Flap Discs Get Tested!](https://fireball.discourse.group/t/trivd-frol-flap-discs-get-tested/3256)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [January 14, 2025, 4:01pm UTC](https://fireball.discourse.group/t/trivd-frol-flap-discs-get-tested/3256 "2025-01-14T16:01:46Z")
Cost (in USD): $0.81 Type #: 29 Material: Ceramic Grit: 40 Disc Thickness: .48" Flap Length: .81" Flap Angle: 33° Flap Sum: 80 DATA --- ## [Sunfire Plantex Flap Discs Get Tested!](https://fireball.discourse.group/t/sunfire-plantex-flap-discs-get-tested/3117)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [December 24, 2024, 12:46am UTC](https://fireball.discourse.group/t/sunfire-plantex-flap-discs-get-tested/3117 "2024-12-24T00:46:40Z")
Cost (in USD): $9.99 Type #: 29 Material: Ceramic Grit: 40 Disc Thickness: .27" Flap Length: .99" Flap Angle: 13° Flap Sum: 40 DATA --- ## [Sait Encore Flap Discs Get Tested!](https://fireball.discourse.group/t/sait-encore-flap-discs-get-tested/3228)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [January 9, 2025, 12:01am UTC](https://fireball.discourse.group/t/sait-encore-flap-discs-get-tested/3228 "2025-01-09T00:01:21Z")
Cost (in USD): $6.40 Type #: 29 Material: Zirconia Grit: 40 Disc Thickness: .20" Flap Length: .76" Flap Angle: 12° Flap Sum: 50 DATA --- ## [Pukamam Flap Discs Get Tested!](https://fireball.discourse.group/t/pukamam-flap-discs-get-tested/3119)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [December 24, 2024, 12:48am UTC](https://fireball.discourse.group/t/pukamam-flap-discs-get-tested/3119 "2024-12-24T00:48:16Z")
Cost (in USD): $1.98 Type #: 29 Material: Zirconia Grit: 40 Disc Thickness: .35" Flap Length: .63" Flap Angle: 29° Flap Sum: 80 DATA --- ## [Pretec Flap Discs Get Tested!](https://fireball.discourse.group/t/pretec-flap-discs-get-tested/3225)
**Author:** [@Fireball\_Filmmaker](https://fireball.discourse.group/u/Fireball_Filmmaker)\ **Replies:** 0\ **Last updated:** [January 8, 2025, 11:57pm UTC](https://fireball.discourse.group/t/pretec-flap-discs-get-tested/3225 "2025-01-08T23:57:48Z")
Cost (in USD): $1.38 Type #: 27 Material: Zirconia Grit: 40 Disc Thickness: .31" Flap Length: .67" Flap Angle: 27° Flap Sum: 80 DATA [Next page](https://fireball.discourse.group/c/abrasives/12.md?page=1)