Angle grinders?

[HoggyN]

I'm just about to write a letter to Santa asking for a cordless angle grinder for Christmas. However, I'm not sure whether to ask for a 4.5" or 5" type. My corded grinders are 4.5" and my stock of discs etc. is sized to suit but I can't .really see any reason why I can't use 4.5" discs on a 5" grinder so the bigger size might be a more versatile choice.

Am I missing something?

Edited December 14, 2016 by HoggyN

[Cornish Rattler]

If the shaft and nut size is the same u should be ok, I have a corded 9" grinder and a 4.5" grinder and when I wear a 9" disc down small enough I can use the same disc on the 4.5" grinder a bit of messing about swapping the disc over but saves wasting discs

[Cynic-al]

My only concern would be is the gearbox / guard etc bigger? That's what usually gets in the way when your trying to do a deep cut with a cutting disk or get it to wear as low as possible.

[UdderlyOffroad]

On 12/14/2016 at 5:58 PM, Cornish Rattler said:

If the shaft and nut size is the same u should be ok, I have a corded 9" grinder and a 4.5" grinder and when I wear a 9" disc down small enough I can use the same disc on the 4.5" grinder a bit of messing about swapping the disc over but saves wasting discs

Check the speed rating of the 9" disc!!!  It might not be rated for the rpms the 4.5" spins at and 'might' come apart in an...interesting manner.

 

As for 4.5 or 5": I'd say 4.5", that extra 0.5" (fnar fnar) isn't that useful and 5" discs are more expensive.  And the increased size of the disc guard means it's harder to get into tight spots.

Matt

[Troll Hunter]

I agree totally with UOR.  Stick to 4.5", and for cutting discs use the best quality, thinnest, discs you can find.  El Cheapos just don't cut it and are a complete waste of money.  I keep 9" discs for use on ceramic floor tiles, etc.

Mike