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Posted

I have a 6" Toolmac Jointer Model : 93-533029 which I bought 2nd hand, I'm new to using one of these and am getting some pretty ordinary finishes, closer look at the knives and they have seen better days. Quick search showed new knives available from CSK that measure 20mm in height, mine measure 17mm, the distance from the bottom of the blade 'slot' to the top measures 16mm.

I can't find a manual or any reference to this machine, is there a proper way to work out the height of the blade ?

Posted

A Google search doesn’t show me anything on this machine. I would think with the slight difference in yours and the ones that you found, that it could be worked out in the adjustment of your outfeed table. I have been using this tool for several years with good results for sharpening jointer and planer knives. 
Not sure why I can’t copy and paste but it’s a sharpening jig from Deulen Tools. 

Posted

As @Coop suggested, if the knives are simple edged stock, they should be adjustable within the head. Index holes in the blade would suggest they are meant to be replaced, rather than sharpened. It is likely that your old blades started out at 20mm, and have been reground to 17mm over time.

Posted
On 12/31/2024 at 12:51 PM, Coop said:

A Google search doesn’t show me anything on this machine. I would think with the slight difference in yours and the ones that you found, that it could be worked out in the adjustment of your outfeed table. I have been using this tool for several years with good results for sharpening jointer and planer knives. 
Not sure why I can’t copy and paste but it’s a sharpening jig from Deulen Tools. 

 

On 12/31/2024 at 12:57 PM, wtnhighlander said:

As @Coop suggested, if the knives are simple edged stock, they should be adjustable within the head. Index holes in the blade would suggest they are meant to be replaced, rather than sharpened. It is likely that your old blades started out at 20mm, and have been reground to 17mm over time.

thanks guys

my main concern was that the blade holder / cylinder is only 16 mm deep and I wasn't sure how much taller the knives should be than the holder / cylinder part. I thought there may have been a nominal height that the blade should sit up more than the holder.

as far as I know the knives are only 'simple edge stock', there are no indexing holes, the bottom of the knife sits on top of 2 springs. I attached a photo ( it was a bit hard to show both sides of the knife)

jointer_knife.jpg

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Posted

I think the 20mm knives you found should work. Extending 4mm above the holder seems quite reasonable, and as mentioned earlier, the adjustment of the tables, relative to the cutter, is what really matters.

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Posted
On 1/1/2025 at 3:06 PM, wtnhighlander said:

I think the 20mm knives you found should work. Extending 4mm above the holder seems quite reasonable, and as mentioned earlier, the adjustment of the tables, relative to the cutter, is what really matters.

Excellent, thanks mate

the above was what I wasn't sure of

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