Results 1 to 15 of 15
  1. #1
    FenceFurniture's Avatar
    FenceFurniture is offline The prize lies beneath - hidden in full view
    Join Date
    Oct 2010
    Location
    1017m up in Katoomba, NSW
    Posts
    10,350

    Default Spelching control when cutting dowels

    Spelching (aka breakout, splintering) of the back of a cut drives me nuts because it ruins an otherwise really smooth cut on my Kapex saw. For square timber this is easily solved by butting a piece of 6mm mdf behind the cut, and a 500mm length lasts for many, many cuts.

    However, when it comes to cutting dowel the mdf strip is no use at all. Of all the timbers that spelch, Tassie Oak (usually Vic. Ash) and Blue Gum are two of the worst, and commercially available dowel is Tassie Oak. A couple of weeks ago I had to cut a few pieces, and it was cosmetically important to have a nice clean cut, and a thought came to me to use masking tape around ĺ of the cut (the front doesn't need it).

    It doesn't work quite as well as mdf backing on a straight cut, but it's pretty good. Gaff tape would probably be even better due to its strength, and sticks-like-stab glue, although the cloth in the saw may be concerning. All up though, I'm pretty satisfied with masking tape.


    Masked up:
    Taped up.jpg

    and cut:



    That's the back of the cut you can see on the front right piece. Not perfect, but pretty good, and MUCH better than unsupported at all.


    (remembering all the comments from the nylon rope thread that were made without looking at the pic first - can I suggest looking at the pics first this time? )
    Regards, FenceFurniture

    COLT DRILLS GROUP BUY
    Jan-Feb 2019 Click to send me an email

  2. # ADS
    Google Adsense Advertisement
    Join Date
    Always
    Location
    Advertising world
    Posts
    Many





     
  3. #2
    Join Date
    Jun 2012
    Location
    Dungog
    Posts
    240

    Default

    I had the same problem 43mm Tassie oak dowel . I had 30 to cut
    Option one use a bandsaw very pleasing result
    The other option was to insert dowel into a close fitting pvc pipe which is fixed to a base plate which is clamped to the saw base plate. Then cut through the pipe and dowel. The pipe acts as a zero clearance plate
    Best of luck with the cuts

  4. #3
    FenceFurniture's Avatar
    FenceFurniture is offline The prize lies beneath - hidden in full view
    Join Date
    Oct 2010
    Location
    1017m up in Katoomba, NSW
    Posts
    10,350

    Default

    Quote Originally Posted by dinosour View Post
    Option one use a bandsaw very pleasing result
    No spelching at the bottom of the cut?
    Regards, FenceFurniture

    COLT DRILLS GROUP BUY
    Jan-Feb 2019 Click to send me an email

  5. #4
    Join Date
    Jun 2012
    Location
    Dungog
    Posts
    240

    Default

    Not sure of thatís a question but minimal to none

  6. #5
    Join Date
    Jun 2000
    Location
    Western Australia
    Age
    76
    Posts
    3,637

    Default

    Pehaps by scoring the back of the dowel with a marking Knife may be worth a try?
    Johnno

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

  7. #6
    Join Date
    Jun 2005
    Location
    Helensburgh
    Posts
    7,460

    Default

    Drill a close to size hole through a sacrificial block of wood, push the dowel into the hole and cut through the block and dowel.
    CHRIS

  8. #7
    FenceFurniture's Avatar
    FenceFurniture is offline The prize lies beneath - hidden in full view
    Join Date
    Oct 2010
    Location
    1017m up in Katoomba, NSW
    Posts
    10,350

    Default

    Quote Originally Posted by John Saxton View Post
    Pehaps by scoring the back of the dowel with a marking Knife may be worth a try?
    Yeah I've done that with cuts in regular square timber, and if you are out by just a fraction it doesn't look too good.
    Regards, FenceFurniture

    COLT DRILLS GROUP BUY
    Jan-Feb 2019 Click to send me an email

  9. #8
    Join Date
    Nov 2021
    Location
    Sunshine Coast, QLD
    Posts
    342

    Default

    If your using a stop, just cut into the surface (set a depth stop at about 1/3rd the way through the dowel or maybe even less) and rotate the dowel making a number of cuts making sure to keep it in contact with your stop.

  10. #9
    FenceFurniture's Avatar
    FenceFurniture is offline The prize lies beneath - hidden in full view
    Join Date
    Oct 2010
    Location
    1017m up in Katoomba, NSW
    Posts
    10,350

    Default

    Quote Originally Posted by Camelot View Post
    If your using a stop, just cut into the surface (set a depth stop at about 1/3rd the way through the dowel or maybe even less) and rotate the dowel making a number of cuts making sure to keep it in contact with your stop.
    Yes, that works well if the end cut appearance isn't particularly important - I find that that technique can show itself in the endgrain. I should probably have been more specific in this case - the end grain is seen as they were for bumroll holders.
    Regards, FenceFurniture

    COLT DRILLS GROUP BUY
    Jan-Feb 2019 Click to send me an email

  11. #10
    Join Date
    Nov 2021
    Location
    Sunshine Coast, QLD
    Posts
    342

    Default

    Quote Originally Posted by FenceFurniture View Post
    Yes, that works well if the end cut appearance isn't particularly important - I find that that technique can show itself in the endgrain. I should probably have been more specific in this case - the end grain is seen as they were for bumroll holders.
    I see, a Disc Sander would sort out the appearance

  12. #11
    Mobyturns's Avatar
    Mobyturns is offline In An Instant Your Life Can Change Forever
    Join Date
    Jul 2012
    Location
    "Brownsville" Nth QLD
    Age
    64
    Posts
    3,805

    Default

    Quote Originally Posted by Chris Parks View Post
    Drill a close to size hole through a sacrificial block of wood, push the dowel into the hole and cut through the block and dowel.
    +1 on that solution. It works.

    I have used it to cut numerous 12 mm dowel spindles for spin top shafts. The block can even be ripped in half through the hole to make life easier. Even a short of any architectural moulding that has a cove that is close to the dowel radius will reduce the spelching significantly if it is used to support the cut as a "zero clearance insert."

    Best solution - use a lathe and add a classy chamfered edge to each end of the dowel.
    Mobyturns

    In An Instant Your Life CanChange Forever

  13. #12
    Join Date
    Jun 2012
    Location
    Dungog
    Posts
    240

    Default

    These are the dowels I cut
    I hope it works this is my first picture posting
    Attached Images Attached Images

  14. #13
    FenceFurniture's Avatar
    FenceFurniture is offline The prize lies beneath - hidden in full view
    Join Date
    Oct 2010
    Location
    1017m up in Katoomba, NSW
    Posts
    10,350

    Default

    Yes, that's about close as dammit to the masking tape result. I must try it with gaff tape and see if that improves it. The best result ( as others have suggested) will be to have a piece of shaped timber backing it Ė no fibre movement at all.
    Regards, FenceFurniture

    COLT DRILLS GROUP BUY
    Jan-Feb 2019 Click to send me an email

  15. #14
    Join Date
    Jun 2012
    Location
    Dungog
    Posts
    240

    Default

    This cut was done on slide compound saw with standard blade.
    the dowel was inserted into a section of 40mm pvc drain pipe, it was slit to fit over the dowel
    Attached Images Attached Images

  16. #15
    FenceFurniture's Avatar
    FenceFurniture is offline The prize lies beneath - hidden in full view
    Join Date
    Oct 2010
    Location
    1017m up in Katoomba, NSW
    Posts
    10,350

    Default

    Yeah noice! That's what we like eh?
    Regards, FenceFurniture

    COLT DRILLS GROUP BUY
    Jan-Feb 2019 Click to send me an email

Similar Threads

  1. Where to buy Dowels
    By brett131267 in forum WOODWORK - GENERAL
    Replies: 27
    Last Post: 5th February 2009, 06:50 PM
  2. dowels
    By pugwash in forum MUSICAL INSTRUMENTS
    Replies: 0
    Last Post: 24th July 2008, 01:26 AM
  3. are dowels still used
    By notenoughtoys in forum WOODWORK - GENERAL
    Replies: 47
    Last Post: 5th September 2007, 12:48 PM
  4. Cutting floating tenons and dowels with a bead plane.
    By JDarvall in forum HAND TOOLS - UNPOWERED
    Replies: 12
    Last Post: 8th March 2007, 03:42 AM
  5. cutting off termite control
    By xxx in forum GENERAL ODDS N SODS
    Replies: 7
    Last Post: 16th May 2004, 10:29 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •