Would these tools be beneficial to me?

[ATTQ]

I have found a bench grinder, not sure if it’s going to be a good one.

I think it’s a SIP 07792 around the £30 mark, I don’t know if it’s still available but wanted to see if it’s a good one or not.

looks good, 375w is decent for 6" and SIP are pretty good usually. I have a big belt/disc sander of theirs and car jack and both impressed me

 

[Gaogier]

Hello

I have also found another bench grinder, what are your thoughts on

Kamasa-Tools 506 CBG bench grinder​

 

[ATTQ]

Hello

I have also found another bench grinder, what are your thoughts on

Kamasa-Tools 506 CBG bench grinder​

if its an old swedish made model probably good, if its imported model probably crap and better to go with sip

 

[Gaogier]

I feel like I am being a bit stupid here.

How do I tell what grit and what stones to be used for each and different pieces. Example sharpening gardening tools like axes to fine woodworking blades that require big chip removal, to drill bits.

I have looked at some stones, and they say corse or fine for example (had this problem with sandpaper and wet stones from b&Q family of stores) where it does not state a grit size.


An example would be this stone, https://www.machinemart.co.uk/p/6-150mm-fine-grinding-wheel/

 

[ATTQ]

same as sandpaper, course removes material quicker, fine gives a finer finish. In practice i rarely use the course one, fine removes plenty of material. But you really shouldn't sharpen cutting edges on a fast wheel, the metal will get hot and become soft. Thats why we were recommending the slow wet wheel ones up thread.

 

[Gaogier]

Yeah, fully understand that about the heat will destroy the “Tempered” metal, if that’s a word I can use from chocolate making.

The bit that has me confused is the grit of the wheels, fine… yeah for a smoother finish, course removes more with the bigger grits… but the stones I have seen so far, say fine, course etc… but what grit are they really? Would say fine be 400grit, 800grit, or a lot more course say 80 grit?

 

[ATTQ]

I suppose its the opposite of grit which is literally grit of different sizes glued to the paper. The courser stones have more cavity when you look at them. Are they glued together material or an actual stone of some type i dont know. Internet will have the answer

 

[robinbanks]

I do have a cheap Draper grinder- I hate it. It vibrates a lot

Does it vibrate if you run it without grinding wheels attached? Can't blame the grinder if the wheels are wonky

With regards to the scroll saw- what do you want to use it for?

Amen. I own one, but have used it once in 12+ years. You'd get more out of a jigsaw and router

 

[opps]

Does it vibrate if you run it without grinding wheels attached? Can't blame the grinder if the wheels are wonky


Amen. I own one, but have used it once in 12+ years. You'd get more out of a jigsaw and router

Good point about wonky wheels. It was only a cheapo Silverline unit, so I didn't expect it to be decent quality.