JD X300 mower blade sharpening

Chazbo007 · Oct 27, 2011

Thanks. I'll keep thinking and looking until next lawn season.

manwith2jd · Oct 27, 2011

I prefer angle grinder over bench grinder and prefer "flap" sanding disc v.s. grinding wheel. Less aggressive and more control. Works well on hand tools like shovels, hoes, etc. Hand file type results.

jenkinsph · Oct 27, 2011

manwith2jd said:
I prefer angle grinder over bench grinder and prefer "flap" sanding disc v.s. grinding wheel. Less aggressive and more control. Works well on hand tools like shovels, hoes, etc. Hand file type results.

Actually I prefer a 12" mil bastard file for things like hoes and light touch ups, not as much chance of overheating the metal and loosing the temper.

This thread reminds me (unfortunately) that I lent a so called "friend" my 10" 1 hp Delta bench grinder to use a few days and he left town with it.

I need to get another one similar to it but that will be several hundred bucks.

beenthere · Oct 27, 2011

jenkinsph said:
Actually I prefer a 12" mil bastard file for things like hoes and light touch ups, not as much chance of overheating the metal and loosing the temper.

This thread reminds me (unfortunately) that I lent a so called "friend" my 10" 1 hp Delta bench grinder to use a few days and he left town with it. I need to get another one similar to it but that will be several hundred bucks.

OUCH!!
That is sad that you lost a good grinder.

I too use the hand file for most tools, but changed to the angle grinder for speed and quick touch up. But do have to watch the heat and it can happen very fast.

At one time, I built a blade sharpening system that consisted of an electric motor with an 8" diam fine grinding stone on an arbor. I cut a slot in a mounting board for the grinding wheel to drop into that also served as a table to support the blade. Then would hand drag the blade past the wheel on its downward side.
This system worked well for a very consistent angle grind, but was getting to be a pain to setup each time. After using the angle grinder, haven't hauled out the better system.

jenkinsph · Oct 27, 2011

beenthere said:
OUCH!!
That is sad that you lost a good grinder.

I too use the hand file for most tools, but changed to the angle grinder for speed and quick touch up. But do have to watch the heat and it can happen very fast.

At one time, I built a blade sharpening system that consisted of an electric motor with an 8" diam fine grinding stone on an arbor. I cut a slot in a mounting board for the grinding wheel to drop into that also served as a table to support the blade. Then would hand drag the blade past the wheel on its downward side.
This system worked well for a very consistent angle grind, but was getting to be a pain to setup each time. After using the angle grinder, haven't hauled out the better system.

I use a small 6" grinder with the rubberized wheel on one side and a fine stone on the other for small tools too, but for a cheap lawnmower blade the 4" angle grinder is good enuff for me. I stick a hawksaw blade in the top of the vise and check the balance while I am sharpening the blades, if it centers close I am good to go.