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Setting The Cap Iron / Chip Breaker – VIDEO

May 24, 2015 By Richard Maguire 37 Comments

 

This is the last (for now) of three videos about cap irons / chip breakers. If you haven’t seen the others then you can find them here:
Cap Irons & Tear Out
Preparing The Cap Iron / Chip Breaker

I find a well set up cap iron to be vital for preventing tear out. It allows me to take good thick shavings and still leave a beautifully smoothed surface, even on difficult grain. Of course this isn’t possible without a good sharp iron, so when it comes to setting the cap iron I want a method that’s straight forward and quick, I can’t be doing with anything that puts me off sharpening up when necessary.

When preparing my cap irons, as in the last video, I don’t mind spending a fair bit of time as it’s a job I’ll only have to do once. Since I have to set it on to the iron over and over, many times a day my method for this is much swifter. Give it a go, experiment to get a feel and let me know what you think.

I focus mainly on the smoothing plane but also discuss setting up on more heavy cambers.

Filed Under: Free Videos, Hand Planing, Woodworking Hand Tools, Woodworking Techniques

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About Richard Maguire

As a professional hand tool woodworker, Richard found hand tools to be the far more efficient solution for a one man workshop.
Richard runs 'The English Woodworker' as an online resource and video education for those looking for a fuss free approach to building fine furniture by hand.
Learn More About Richard & The English Woodworker.

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Comments

  1. Paul Chapman says

    May 24, 2015 at 2:22 pm

    Excellent series of videos, Richard 🙂

    Reply
    • Richard says

      May 24, 2015 at 9:42 pm

      I appreciate that Paul.

      Reply
  2. Nimrod Kapon (Bas) says

    May 24, 2015 at 3:23 pm

    Thank you Richard!

    I learn so much from your videos; especially the last three videos really opened my understanding about tear out and how to set up the cup iron. I have been learning carpentry for 7 years but only couple of months ago that I’ve opened my own workshop and started to play with things without the supervising eye of the master. It is now that I’m starting to figure out things by myself, I guess it is always easier when you have your teacher solving any problem you can’t deal with at your first try.

    One of my biggest frustrations was how to set the planes; when I learnt we didnt actually deal with it, just how to work with the already set planes. And your experience, wisdom, and great way of teaching, helps me so much.

    So thank you again and keep on the good work!

    Bas

    Reply
    • Richard says

      May 24, 2015 at 9:46 pm

      Hi Bas, you will never stop learning but the fun begins now that you’re on your own. It is very lovely to hear that the videos have been of some help.

      Reply
  3. Chris Buckingham says

    May 24, 2015 at 3:39 pm

    This has been an excellent and informative series, it is very nice to see there are others that think the same as I do, so many people “experts” all, tell me my iron should be nothing but straight and square, as I plane timber much wider (generally) wider than my plane, I much prefer to have a camber which just disappears up at the edge of the mouth, that way I do not get a series of visable trenches across my job. Many thanks for posting this.

    Reply
    • Richard says

      May 24, 2015 at 9:47 pm

      Cheers Chris, I completely agree, straight irons just don’t seem to cut the same anyway.

      Reply
  4. Stephen Melhuish says

    May 24, 2015 at 6:21 pm

    Great stuff Richard….the no nonsense meat and two veg approach to setting up a cap iron to get a decent shaving……more power to your elbow.
    Cheers
    Steve

    Reply
    • Richard says

      May 24, 2015 at 9:49 pm

      Thank Steve, ‘The Meat and Two Veg Approach’ sounds like a good book title!

      Reply
  5. Michael O'Brien says

    May 24, 2015 at 7:26 pm

    Really useful especially set of videos on the cap irons. You have made simple what others have tried to complicate with too much fussing up. I had already started doing the tapping to advance the blade only because, like a blind hog discovering an acorn, I stumbled upon it. Did I hit a wrong button on my iPhone or are your video blogs now with closed captioning for the blokes who can’t understand your cheery accent? Great job.

    Reply
    • Richard says

      May 24, 2015 at 9:50 pm

      Thanks Michael, the captions have been added to translate me, although I didn’t think they came up automatically, I’ll have to check that out.

      Reply
  6. davidos says

    May 24, 2015 at 7:52 pm

    most comprehensive explanation i have ever heard about setting an iron and exactly why it is done like that .brilliant

    Reply
    • Richard says

      May 24, 2015 at 9:52 pm

      Many thanks 🙂

      Reply
  7. David Charlesworth says

    May 24, 2015 at 9:34 pm

    Richard,

    Your cap iron screwdriver looks suspiciously like a chisel ?

    Can this be true?

    David

    Reply
    • Richard says

      May 24, 2015 at 9:53 pm

      Hi David,
      ha ,ha, whatever would make you think such a thing? ‘cough, cough’.

      Reply
  8. Sean says

    May 24, 2015 at 9:54 pm

    Thanks Richard. Wondering why I took the camber out of the iron on my eBay number 5 now. Always thought / my logic told me it should be straight. Hoping there’s a video on the way to tell me how to put it back!

    Reply
    • Richard says

      May 25, 2015 at 10:03 pm

      Yep, no biggy putting the camber back. Hopefully we will do a video on this and we’ll be able to go in to why it’s so important.

      Reply
      • Andy Campbell says

        December 13, 2020 at 8:10 am

        Love the videos, good simple explanations.
        But I can’t grasp your reasoning behind camber on your blades..
        My Dad. taught me cambered plane blades are for roughing not finishing.
        Surely a cambered blade leaves a wavy pattern along the line of the cut as each successive cut is deeper in the centre of the blade and shallower at the edges even if the cuts are overlapped.
        Whereas the straight blade cuts the next pass to the same depth as the one before but on the next parallel line of cut thus removing the same amount of material down to the previous cut or just just leaving a raised ridge between the cuts that is removed with the scraper.
        Mind you he never considered for cabinet work a planed finish was fine enough anyway.
        That’s my understanding anyway.

        Reply
  9. DenverGeorge says

    May 25, 2015 at 12:00 am

    I work in a woodworking supply store (Rockler). I run into people who are just turning to hand tools. I am certainly going to recommend to these folks that they watch all your “rants”. They are some of the best, yet simplest, basic information I have ever come across. I know that my work is certainly improving as a result of your information. Keep it up.

    Reply
    • Ray says

      May 25, 2015 at 3:38 am

      Hi,

      I have found that my local Rockler store and catalog are virtually devoid of quality hand tools. I hope this changes due to employees like you that are interested in hand tools.

      Reply
      • DenverGeorge says

        May 25, 2015 at 3:46 am

        Could not agree more.

        Reply
    • Richard says

      May 25, 2015 at 10:05 pm

      Hi Denver, many thanks that made my day! It’s really kind of you and I’m very pleased that they’re helping.

      Reply
  10. Glen C says

    May 25, 2015 at 12:13 am

    Great 3-part series. After the first one I opened the mouths of my smoothers and closed up the cap iron gap. You know what happened. Generally good things.

    Anticipating the camber video.

    Reply
    • Richard says

      May 25, 2015 at 10:06 pm

      Many thanks Glen, good to hear it.

      Reply
  11. Ray says

    May 25, 2015 at 3:43 am

    Thank you for a great series of videos regarding chip breakers.
    A question- With a chip breaker set very close on a cambered blade, can the outside edges of the chip breaker hang beyond the edge of the blade? It appears that this is happening in one of your close up images.

    Thanks again for an excellent series. I look forward to more.

    Reply
    • Richard says

      May 25, 2015 at 10:08 pm

      Hi Ray, generally you should aim for it not to overhang, if it is then you’ll not be able to take a full width shaving. I think in the photo the iron was nicked at the corner, but I’ll take that out over a duration of sharpening.

      Reply
    • David Weaver says

      September 17, 2015 at 10:23 pm

      Hi Ray – the overlap is not much of a problem, because you’ll not work with the cap iron protruding through the mouth of the plane. One, it would clog if it did, and two, it would be extremely difficult to push such a thing because part of the cut would be at 90 degrees or more to the edge.

      Anyway, those parts where the cap may overlap a very cambered iron are no problem, because that part of the iron won’t be in the cut. You will still appreciate the stability of the iron with a close set (as close as you be without a whole lot of extra resistance) in the case that you are not working perfect wood where you can plane with the grain everywhere.

      Reply
  12. Warren Mickley says

    May 25, 2015 at 8:42 pm

    I still get the impression you don’t have a lot of experience with the double iron. It is unnecessary and unreasonable to have the cap iron distance the same as the depth of cut. Otherwise keep up the good work, Richard. Good hands and good instincts. It is refreshing to see a blogger that is not clumsy as all get out.

    Reply
    • Richard says

      May 25, 2015 at 10:28 pm

      Hi Warren,
      I appreciate the support. One thing, perhaps the only thing I can guarantee for you is that I’ll write only from my own experience – good or bad.
      I’ve been fortunate to have experienced growing up and working professionally as a hand tool woodworker so I believe in the efficiency of the past but find it’s probably more important for this blog to try and make things relevant for a broad range of woodworkers. Sometimes this means simplifying explanations or creating formulas etc.
      Cheers.

      Reply
  13. Daniel says

    May 26, 2015 at 4:01 am

    Hi Richard,
    I’m getting started with hand tool woodworking – really grateful for these videos. I tried to set the cap iron closer on an old Stanley No 4 but it would not go closer than 12 gnats (= 600 gnats nadgers, or about 3mm in the old scale). It seems the cap iron screw would not sit any lower in the frog?! I must have got something wrong somewhere. Any thoughts?

    Thanks,
    Daniel

    Reply
    • Richard says

      May 28, 2015 at 4:01 pm

      Hi Daniel, if you would like to send me a photo of this then I might be able to offer you some thoughts.

      Reply
  14. Barry says

    May 27, 2015 at 2:37 pm

    Many thanks Richard. Very Very helpful.

    Reply
  15. John Land says

    June 1, 2015 at 9:35 pm

    Hi Richard,
    Have you seen / tryed a Clifton 2 part cap iron, perfect for your problem of having to resharpen 4 times a day, quickly. Looking forward to the wooden planes videos. John. (Outwood)

    Reply
  16. Bas says

    November 2, 2015 at 10:35 am

    Hello Richard,

    Great video series, I now have a much better understanding on how my plane iron and the cap iron work together. I found it improved my planing a lot! Thanks for that.

    When I saw the last video I wondered if it would be a good idea to also make a camber on the cap iron. It then would follow the camber on the plane iron. Do you have any experience with that?

    Reply
  17. Michael Bacon says

    June 1, 2016 at 4:53 pm

    Just set up my cap Irons as you showed, and for the first time ever felt my planing might actually look like I know what I am doing.

    Love the site, thanks.

    Reply
  18. Andrew says

    July 6, 2016 at 1:31 pm

    Thanks Richard.

    At the moment, I don’t even use a plane but I love watching these videos!

    Reply
  19. Stephen says

    August 16, 2016 at 5:02 pm

    Your videos on setting up and tuning the chip breaker have made an immense difference in my smoothing plane. I’ve always struggled to get it to make a fine cut, believing I just wasn’t getting the iron sharp enough. I never thought the chip breaker played such an important role in getting super fine cuts.
    I’ve learned…or re-learned much from your other videos and blog posts also.
    I’d be remiss not to mention Helen’s posts, her skill level differs from yours but she does an excellent job sharing what she has learned with us.

    Reply
  20. Mark says

    October 11, 2020 at 10:36 pm

    Very interesting. I’m quite new to woodworking and I’m having trouble with tear-out around knots. I’ve tried the tricks but some wood just doesn’t behave. I’ve been looking at low angled planes and 55 degree frogs, but they are too expensive.

    Just to clarify (because the solution looks so easy I think I might be missing something), if I follow the steps in the three videos and modify the cap iron as instructed, I will have a No. 4 smoothing plane that will help minimize tear-out?

    Reply

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