I just bought a Milwaukee 4 1/2"-5" angle grinder to upgrade from my old Ryobi. I don't do a whole lot of grinding (probably obvious, since I'm talking about a 5" battery powered grinder), and either guard and disc types have multiplied since I bought the Ryobi, or I was never aware of them in the first place. Either way, I am now thoroughly confused after trying to understand it all. I have tried Googling this, but haven't found a concise summary and I hope someone can help me sort this out. My questions are:
- The Milwaukee came with a 5" Type 27 guard (metal, attaches directly to the grinder with a positive lock), with a plastic Type 1 guard that just snaps on over it. My understanding is that the T1 is used for cutoff wheels, not grinding. Is that right?
- I usually use flap discs. I bought some online before the grinder arrived and I went down this rathole, and it turns out they're Type 29. Are there any concerns with using a T29 flap disc with a T27 guard?
- Similar to the above, the flap discs are 4 1/2", not 5". Are there concerns with using a 4 1/2" disc with a 5" guard? Milwaukee does make a 4 1/2" T27 guard for this grinder, but it's sold separately.
Hopefully I'm just overthinking all of this, but I would like to at least understand what I'm getting myself into. The Ryobi was a factory refurb and came with what I now assume is a T27 guard and I've never had any problems; I know that a lot of people don't even use a guard, but that's not me.
- The Milwaukee came with a 5" Type 27 guard (metal, attaches directly to the grinder with a positive lock), with a plastic Type 1 guard that just snaps on over it. My understanding is that the T1 is used for cutoff wheels, not grinding. Is that right?
- I usually use flap discs. I bought some online before the grinder arrived and I went down this rathole, and it turns out they're Type 29. Are there any concerns with using a T29 flap disc with a T27 guard?
- Similar to the above, the flap discs are 4 1/2", not 5". Are there concerns with using a 4 1/2" disc with a 5" guard? Milwaukee does make a 4 1/2" T27 guard for this grinder, but it's sold separately.
Hopefully I'm just overthinking all of this, but I would like to at least understand what I'm getting myself into. The Ryobi was a factory refurb and came with what I now assume is a T27 guard and I've never had any problems; I know that a lot of people don't even use a guard, but that's not me.