More On Sharpening Hollow Morticer Chisels

[pollys13]

I understand Clico here in UK used to do a sharpening set up to 1" though they are no longer trading. If I can't locate a chisel sharpening set up to 1" or the cost to me is prohibitive.
I think I can double cut width with a 1/2" to get a 1" mortice? So don't need to use or consequently sharpen the 5/8" size.
Can I combine the chisel sizes to get multiple cuts/widths or does it not work like that?

I know about selecting, a hand chisel to the nearest size required.

 

[deema]

The chisel will always move towards any area where there is no wood, so normally you would plunge the two ends and then cut out the middle. If you cut a Mortice with a double row, the chisel is likely to veer off towards the centre giving the Mortice a slight taper. If at all possible it's best to use a Mortice of the correct size.

 

[Beau]

I am always double cutting without any major problems. Mark your mortices with a knife and a mortice gauge and the chisel locates in the mark and should cut pretty much vertically. You might get a slight taper on the ends of the mortice as the end grain can sometimes deflect the chisel slightly but nothing a quick clean up with hand chisel wouldn't sort.

 

[pollys13]

Thanks for the input.