This is the disc that I use most often, sometimes with really good results and sometimes just ok. Its been interesting to see how added pressure has improved most discs youve tested. Ive always thought extra pressure would wear them down worse but never really paid attention and I sure will going forward.
Your testing shows a fairly common characteristic with these discs, they don't like low pressure. That does present some challenges to the user when minimal removal is desired. The disc will fail faster. It will be interesting to see if a low working pressure disc is even available. The surprise to me was the nearly universal failure at low speed across the board. None did well. High speed means more heat from friction, apparently the common thread in design is to thrive on friction and heat. Yeah, coarseness is also a huge factor, lower grit produces less heat in bench grinder wheels, the same physics apply here. Certainly an interesting balance to achieve.
This is the disc that I use most often, sometimes with really good results and sometimes just ok. Its been interesting to see how added pressure has improved most discs youve tested. Ive always thought extra pressure would wear them down worse but never really paid attention and I sure will going forward.
Happy New Year! May your weld puddles be stable and your flap discs be long lasting.
Are the disc glazining or just losing grit and and exposing the backing material and there isn't enough pressure to get to fresh material under it.
Your testing shows a fairly common characteristic with these discs, they don't like low pressure. That does present some challenges to the user when minimal removal is desired. The disc will fail faster. It will be interesting to see if a low working pressure disc is even available. The surprise to me was the nearly universal failure at low speed across the board. None did well. High speed means more heat from friction, apparently the common thread in design is to thrive on friction and heat. Yeah, coarseness is also a huge factor, lower grit produces less heat in bench grinder wheels, the same physics apply here. Certainly an interesting balance to achieve.
Thanks for the time you spent making these!
2/3 done! Keep them coming, Jason!
Great test makes for a great video! Thanks.
So when's the fireball flap disc releasing?
Awesome review
Interesting. By trying to preserve the disc, we inadvertantly do it from performing. Ironic! I have a few of these...
If you had ti buy a flap disk which one would you buy for the value