Cutting, filing, etc.

[finn17]

Well....

I kinda regard cut off discs as being disposeable anyway, and as someone who used to grind 6 cylinder lorry crankshafts for a living..I am not surprised when my toy ones pop:flip:

 

[Itchy]

hehehe... yeah, you kinda have to be a whee bit more light handed on the little miniatures vs those bigger chunks of metal, huh.lol

 

[finn17]

Just a bit...

Originally posted by Itchy
hehehe... yeah, you kinda have to be a whee bit more light handed on the little miniatures vs those bigger chunks of metal, huh.lol

10-13 4ft diameter grinding wheels on an eccentric shaft, made for a lot of \'fun\':flip:

 

[vincegamer]

Originally posted by Itchy
Toothed blades and files only cut on the forward stroke, when you feel resistance... that\'s because the teeth are chatching the metal, and forcing the chip off the part. If you rub them backwards all you\'ll do is dull the file/blade.

I didn\'t realize it would dull the file. The same rule applies to filing wood, but probably for a different reason. When you push with the file you break up the surface of the wood. When you pull back with pressure you smooth it down so there\'s nothing to catch when you push forward again, making it very slow work to file down the piece of wood.

 

[Itchy]

Well, not really.... wood\'s a lot softer than high speed steel, so you wont hurt your rasp any, but you\'ll actually crush the wood down making it look smoother when you run the rasp backwards. But i\'d still run the rasp only on the forward stroke and get some different grits of sandpaper for the wood to protect it\'s grain and the integrity of the wood.

Oh, and if you can at all help it, don\'t mix your wood tools and your metal tools... bad things start to happen after a while if you do.