Self sharpening your chipper blades

[Breezeblock]

those were test pieces !!

[simonm]

I know it's steep but I recently got quoted £40 for a regrind of a 4 inch set of blades.

 

Bloody el that is steep! i used to take mine to saturn machine knives to get them sharpened but it was a real ball ache taking them to sheffield and waiting with them! i found a company 5 miles away that sharpen them for £6 a set. I just take them straight down and they put them straight on the lathe and do them there and then. only takes 10 mins pays to shop around

[aspenarb]

Adapted mower blade grinder, takes any blade and can do six timberwolf blades in one go ( takes less than five minutes). Fully automatic and adjustable , well under a grand. Has been doing a good job of our blades for over 15 years.

 

Bob

 

 

 

http://arbtalk.co.uk/forum/attachment.php?attachmentid=144134&stc=1&d=1387914456

[Pbtaylor2014]

On 24/12/2013 at 07:50, Robert_S said:

I think bearing failure is down to blunt blades rather than a few grams difference in weight. I sharpen my own on a jig on a bench grinder and have done for years.

Any info on your jig set up for a forst st6

[GA Groundcare]

A set of digital bathroom scales will sort out any weight issues. 

 

However, a few grams isn't going to make much difference. When you consider that when timber is going through the flywheel that's turning anti clockwise, 6 o'clock to 12 o'clock is loaded with chip, then 12 o'clock back around to 6 o'clock is largely empty.

[Gardenscape]

I have the Jo Beau M500. I few years ago they global recycling quoted me nearly £300 for a set of knives. I was in disbelief. I decided to sharpen them myself. They weren't at a stage where they were heavily chipped, just very dull

. I decided to skim them with an angle grinder using a flap sanding disk. I've now done this for about two years regularly to the same knives and I have them still working and same bearings since I got the machine about 4 years ago. As long as you aren't stripping a lot of metal back that will seriously imbalance the weight on the knives, it's not an issue.