CS100 Blade Angle Advise

[Spoons]

Looking for advice on my recent problems with having my Greenmech CS100 blades being ground at wrong angles. I wont name and shame the company unless I need to. Had 2 sets re-ground as both had got dull, came back put them on and the chipping was horrendous. Phoned said company and they had it on their systems as the wrong degrees. Sent them back and they did them to the correct degrees free of charge (obviously)(I also put the angles from the Greenmech booklet). Put them on and was better but still not pulling it through as these little machines are meant too. The drive belts were a little slack and at full adjustment so bought a new set hoping the cassette was slipping thus not dragging in the branches. These did nothing to help. Realised one of the blades had a crack through it so put the other spare set on and ordered a new said from the same company. When they arrived I realised that the measurements between the new ones an the sharpened ones where different. They had ground the flat underside over a whopping 8mm rather than the required 4mm.

 

My question is: Do I phone the company and ask for a full refund for the original grinding of both sets? Or ask for something more? Over this major "chicken up" of grinding, I have lost probably about 100hrs worth of chipping metal between the 2 sets of blades with them being ground more than they should be! The spare set will need to be ground again. I think in my mind I should be entitled to a set given free of charge for all this messing around. What should have had one grind will have in the end had 3!

I look forward to hearing some of your reply's.

 

Ross.

[john p]

Have you adjusted the anvil? If the gaps too big it won't chip well at all

[Spoons]

Yes anvil has been adjusted many times to get it working but never does because the blades have obviously been done wrong constantly.

[Bob The Dog]

Hi Spoons. Wow- 8mm back angle. That's way off, and no wonder the blades won't pull anything through. Grinding that much off the back angle completely changes the location of the cutting edge, and will probably result in the rear end of the top angle coming into contact with the wood first (if that makes sense?). The angles and that 4mm measurement are crucial to a proper set up, and no amount of anvil adjustment will help. I had the same issue some time ago, and couldn't understand why anything bigger than an inch or so just got knocked about and wouldn't cut. I'll dig out the diagram of the angles I send with my blades when they go off for grinding, so they know exactly what I want. I use will at Saturn knives, and had a spare set of rotatech blades from the too. Always had a top service. Regarding the 8mm grind - you're gonna lose a load of life having those front angles ground back to get them right, so as long as you can prove they had the correct 4mm measurement to work to, I'd certainly be askin for a new set.

[Bob The Dog]

Hopefully there's a pic on here now.