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  1. #1
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    Default Thicknesser and embedded screw didn't play well together

    Pulled the old mailbox apart this morning to recycle it into a draw front just because i could, unscrewed all the screws i could see and nothing seemed to be left.

    Maybe a metal detector might be a good idea... found another four with the tablesaw and the 30t rip blade.... apart from a few sparks it ate the left over screws for breakfast, no knicks i can see.

    Wasn't so lucky with the last one in the thicky.... glad it has a spiral head and inserts and that i had some spare inserts supplied with the unit.

    There was 30mm of screw that had no head and i never spotted that got rudely extracted by the inserts cutters. made a nice bang and certainly made me jump.

    P4100143.jpg

    Destroyed at least two edges on three cutters, so I just replaced them so I could grab a couple of photos

    Time to buy a few more spares

    Certainly a big positive for individual cutters, took maybe 15 minutes to replace.

    Cheers
    Phil

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  3. #2
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    f

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    I would love to grow my own food, but I can not find bacon seeds

  4. #3
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    That's a wake up call for all of us if dealing with recycling our timber needs.
    Thankfully Phil I have not done what has unfortunately happened to you, but I understand the need for powerful magnets run over timber to give peace of mind.
    The expense of replacing damaged parts with the time involved would benefit the necessity of a magnetised wand or some such .I have still got to go down that path & grab one before apathy rears itself.
    I have some recycled Jarrah timber here from an old fence so instead of denailing the ends I just used a skil saw out in the paddock to lop the ends off saving at least a fair bit
    of timber the ends going on a burn up pile.
    Thinking something like this might be appropriate though DIY magnetic swarf wand
    Johnno

    Everyone has a photographic memory, some just don't have film.

  5. #4
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    Why didn't you just rotate the cutters in question to bring a fresh edge into use?
    Rich

    When SWMBO said "I won't cook in metric."
    The metric system died in the US.

  6. #5
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    Quote Originally Posted by rrich View Post
    Why didn't you just rotate the cutters in question to bring a fresh edge into use?
    I did have a couple of reasons
    1 I really wanted to take a decent photo of the damage so it was easier to just replace them
    2 I could see that multiple edges were damaged but not well enough to be sure which edge to rotate to, noting one has only a single good edge left and I certainly did not see that at the time.
    I had the spares to do it and these get put in the box as spares.

    after taking a close look at the hi res photos id also question the integrity of the one with the big chuck out of it, carbide might be tough but it also brittle.

    your right though that normal practice would be just rotate the cutters.

  7. #6
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    Gday Phil

    "made a nice bang and certainly made me jump."

    I can understand that.

    Can you let us know how you go if you source replacement cutters, please.
    Always good to store useful info for the future.

    BTW are you still happy with your thicknesser Wixey DRO?

    Cheers
    Keith

  8. #7
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    It must be the day for mishaps. I cut a hidden screw with a brand new 4TPI bandsaw blade, so hard it took the sharpness off every tooth. Nearly 1 hour to touch them up with the diamond disc. And to make it a good day, found a piece of gravel in virgin timber on the thicknesser, so another blade sharpening for me.
    Rgds,
    Crocy.

  9. #8
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    Quote Originally Posted by verawood View Post

    Can you let us know how you go if you source replacement cutters, please.
    Always good to store useful info for the future.
    Best source for cutter inserts is here. Even though the Timbecon website says they are 14mm cutters, the spare ones that came with the unit are 15 x 15 R150 37
    I think the grade of carbide in these units is fairly soft or brittle as I also hit a very small pin in some Cedar and it nicked the insert. I have cut nails with my saw blades a few times with no obvious ill effects. I think the SJE inserts will be much better.
    Dallas

  10. #9
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    Quote Originally Posted by Treecycle View Post
    Best source for cutter inserts is here. Even though the Timbecon website says they are 14mm cutters, the spare ones that came with the unit are 15 x 15 R150 37
    I think the grade of carbide in these units is fairly soft or brittle as I also hit a very small pin in some Cedar and it nicked the insert. I have cut nails with my saw blades a few times with no obvious ill effects. I think the SJE inserts will be much better.
    Hopefully SJE tools may chime on but the one stocked are not the 37deg ones as seemingly used in all the sherwood cutter heads, as you noted the supplied spares are 15x15x2.5-37-R150 ..... the common shellix cutters are only 30deg ones and may not seat correctly.

    I measured one and it is 37 deg.

    Cheers
    Phil

    PS the 14mm is another spec error they should fix

  11. #10
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    Quote Originally Posted by verawood View Post
    Gday Phil

    "made a nice bang and certainly made me jump."

    I can understand that.

    Can you let us know how you go if you source replacement cutters, please.
    Always good to store useful info for the future.

    BTW are you still happy with your thicknesser Wixey DRO?

    Cheers
    Keith
    Hey Keith, I was hoping to get them out of SJE but they don't list the 37 deg versions. Amazon has some for a bit more $

    yep the Wixey makes life easy.... hate the backlash in the thicknesser itself but the DRO is accurate and makes it easy to go back to the same size.

    Cheers
    Phil

  12. #11
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    Phil

    At least the remedy is fairly cheap and relatively easy. Those tungsten cutters are hard and brittle (not soft or tough), which is why these are so intolerant of ferrous metal. Tungsten carbide comes in different grades as commonly metal lathes have tungsten carbide cutters, but they are not the same as yours.

    I would use the damaged cutters for making up a woodturning tool. They look exactly like those I used even down to having the numbers on them. The minor damage on second edges may be removed also by sharpening. Sharpen them on the flat face using a diamond stone. (Don't sharpen the edges.)

    Regards
    Paul
    Bushmiller;

    "Power tends to corrupt. Absolute power corrupts, absolutely!"

  13. #12
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    You're dead right Phil, the SJE inserts are only 30 as I checked the spare ones I have here for my CTS Jointer head and that's what they are and as you say, they won't register correctly against the raised wall on the Planer. Maybe it's the steeper angle on the Sherwood inserts that makes them more prone to chipping as the sharper the angle the weaker the edge is. In your case it wouldn't have mattered what angle they were, you would have got the same result. It will be interesting to see if SJE bring in their own version of the Sherwood inserts. I hope there is enough demand for them to consider it.
    Dallas

  14. #13
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    Quote Originally Posted by Treecycle View Post
    ....In your case it wouldn't have mattered what angle they were, you would have got the same result. It will be interesting to see if SJE bring in their own version of the Sherwood inserts. I hope there is enough demand for them to consider it.

    Not sure if that is good or bad thing?

    You don't wish these sorts of events on anyone, but it would be good to have an alternative source of replacement cutters.
    Mobyturns

    In An Instant Your Life CanChange Forever

  15. #14
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    Ladies have bad hair days and we shove bits of steel through our machines.
    With the cost of timber going through the roof recycling is more attractive than ever but it comes sometimes with a hidden cost. It is a major irk when it happens too. So far I have not shoved any iron through the thickie but the tablesaw and bandsaw have found bits. Strange thing the tablesaw sliced clean through a couple of screws without any real damage. One screw was sliced through longways too. It was not quite so sharp as before but the TC teeth were not chipped. That said seeing sparks fly when cutting wood is not something that makes me feel good.

    Regards
    John

  16. #15
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    Gday Phil

    Thanks for the info.
    I had a look for cutters on Amazon like you mentioned but couldn't find any 37's.
    No doubt operator error.
    Could you post the Amazon link, please.

    And while I'm on the info scrounge, where did you buy your Wixey DRO, please.

    Cheers
    Keith

    Quote Originally Posted by Aussiephil View Post
    Hey Keith, I was hoping to get them out of SJE but they don't list the 37 deg versions. Amazon has some for a bit more $

    yep the Wixey makes life easy.... hate the backlash in the thicknesser itself but the DRO is accurate and makes it easy to go back to the same size.

    Cheers
    Phil

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