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13th September 2020, 12:09 PM #31SENIOR MEMBER
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Continuing testing
In post #18 I displayed the results of my preliminary tests to check my setup and techniques.
Image 4 - Checked for parallel 73.40mm
Image 5 - Other end - Oh Bugger 7.36 .Out by 0.04mm. Is that close enough for a pass mark?post #21"In the spirit of competition and making you do it twice, that's a fail."post #26 I am looking for a plane which will be optimized for Australian hardwood species where the aim is to emphasize the grain.
The question now is how to rectify the cause of such a potential problem.
Doug3030 in post #25 correctly pointed out the that I was wasting my time with the piece of pallet material I was using, but I am not sure that in respect to the tests I was conducting that it played a significant role. I now see how the problem is being caused by my technique and that only a small compensation in how I feed the billet into the jointer is required to resolve the issue.
I said in post #22I'm sure If I apply a little more pressure I could get the 73.40 down to 73.36
Think about where the smoothed section of the billet is after it has been cut. On the plane it is under the tote and the area to be smoothed is to the left of the blade. However on the jointer, it is the area which has passed over the revolving cutter which is on the left supported by the out-feed table while the area still to be cut is supported by the in-feed table to the right of the cutter head.
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13th September 2020 12:09 PM # ADSGoogle Adsense Advertisement
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15th September 2020, 09:35 AM #32SENIOR MEMBER
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Received a gift in my mailbox yesterday - a piece of tool steel 38 x 8 . Thanks Matt.
Looking at the width of the of the steel, I am thinking it may be too narrow for a #5 Jack plane. As I discussed with Matt, maybe I should revise to plan to something of the size of a #4 or even a #3. I would appreciate your comments and suggestions.
I must have been pretty bored last night with all this lock-down restrictions. Anyhow opened up LibreCAD and started playing around withe some unconventional designs. What are your thoughts on this:
Attachment 481048
Note dimension in bottom right corner should be 140 not 14Last edited by Oldgreybeard; 15th September 2020 at 09:51 AM. Reason: corrected dimension
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15th September 2020, 10:00 AM #33SENIOR MEMBER
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Hey Bob, in all normal woodworking days anything under .1mm would generally be a pass , there was multiple legitimate reasons you could measure a difference and 0.04mm has got to be in the insignificant it doesn't matter category over that length .
But it is a competition........
I am curious if you did remeasure after the wet weekend, didn't spot it, my initial thought was it could swell with some moisture but really the percentage change would be in measurement error range and maybe the original measurement was increased due to sun induced expansion from heat.....
Maybe once we get into machinist measurement territory with wood we are also well into error ranges.
Cheers
Phil
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15th September 2020, 11:25 AM #34SENIOR MEMBER
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I must confess that I got carried away with sorting my technique and by the time I remembered to measure the billet again the measurement did show an increase of 0.01mm. But by this time the weather had changed and the sun had been out for about 2 hours, so in the end the test was meaningless.
BTW changing my technique by increasing the the downward pressure exerted by my left hand over the out-feed table does give me more consistent results.
Cheers
Bob
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16th September 2020, 09:49 AM #35SENIOR MEMBER
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Support from UK
The following words of support for our challenge was received today from English Woodworker Journal in response to my email seeking approval to use their copyright material. see post #2.
Hi Bob,
Many thanks for getting in touch and we're delighted you've found the
plane build video useful for your challenge! No problem at all in
sharing it
We'd love to hear how you all get on.
Kind regards,
Helen
Woodworking Videos & Blog |Hand Tool Woodworking | The English Woodworker
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16th September 2020, 01:49 PM #36
Bob
Well chased up. We would not want Boris' mob (MI6?) chasing after us, although quarantining for two weeks should give us a heads up and a chance to flee the coop.
Actually going to the link I see that the site is tailor made for Matt, not that I want to bring up favoritism or indeed any other heinous transgression of the rules:
Made for Matt.png
It should appeal to his macho image at the least.
Regards
PaulBushmiller;
"Power tends to corrupt. Absolute power corrupts, absolutely!"
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16th September 2020, 03:42 PM #37SENIOR MEMBER
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Hi Guys
Getting close to a final design. Just wish my memory was better so that I could member how to use Fusion 360 Drawing workspace Anyhow I think you will be able to get the gist of the design from this (took it into Photoshop and cleaned it up a bit)
plane.jpg
I appreciate your comments and suggestions.
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16th September 2020, 04:34 PM #38
maybe try again, invalid attachment.
I got sick of sitting around doing nothing - so I took up meditation.
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16th September 2020, 05:08 PM #39SENIOR MEMBER
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16th September 2020, 05:49 PM #40
Bob,
Have a look at the blade, an your mouth(No don’t go to the bathroom mirror).
It looks like your going to really struggle to get a shaving out of that, unless you bring the blade down.
I would draw my 50 degree bed angle, then draw your blade on that,
Then do the rest of the plane.
Cheers Matt.
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16th September 2020, 08:41 PM #41SENIOR MEMBER
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Ha ha you caught me out. I told you that my memory in terms of Fusion 360 was very rusty. The problem originated from the fact that I drew the blade bevel up instead of bevel down. I 100% agree with you
I would draw my 50 degree bed angle, then draw your blade on that,
Then do the rest of the plane.
Cheers, Bob
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16th September 2020, 09:39 PM #42
Bob
I prepared this about four hours ago but got distracted! In th meantime you and Matt have got it all sorted.
"Bob
I see that the plane is blue. What timber will you be using?
Silly comments aside, the positioning of the blade will need some adjustment either forward or back as for the moment there is no effective mouth. Moving the blade bed back will give less room for blade adjustment bearing in mind you need "tap" room. Moving the blade forward may make it too far forward: The dilemma."
However, there was clearly another and more simple solution.
Regards
PaulBushmiller;
"Power tends to corrupt. Absolute power corrupts, absolutely!"
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16th September 2020, 10:50 PM #43
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17th September 2020, 08:55 AM #44SENIOR MEMBER
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17th September 2020, 09:22 AM #45SENIOR MEMBER
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