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Thread: Plane sole flattening, again...
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23rd July 2019, 09:24 PM #136
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23rd July 2019, 09:32 PM #137
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23rd July 2019, 10:39 PM #138
Matt,
Lapping is the more expensive technique, both in time and money.
For lapping you need an iron lapping plate or more preferably three, the expensive thing(s), and an assortment of diamond compounds.
For scraping you need a scraper, a flat reference surface, a brayer and spotting compound.
Both techniques can, but not necessarily must, make use of various types of flatness gauges, straight edges and squares. These are expensive but really help in guiding the work.
Both techniques are also messy and labor intensive.
Cheers,
RobInnovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.
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24th July 2019, 06:20 AM #139
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24th July 2019, 02:14 PM #140
Matt
I have this feeling that you may have confused "bane" with "thane." You may recall how Macbeth became Thane of Cawdor and Glamis in Billy S's play (if you were paying attention that day at school ). Alternatively, predictive texting (is that what it is called? My carrier pigeon is unfortunately not in the IT world) has let you down badly and "betrayed you in deepest consequence" (just to perpetuate the Shakespearean theme).
Regards
PaulBushmiller;
"Power tends to corrupt. Absolute power corrupts, absolutely!"
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24th July 2019, 06:11 PM #141
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25th July 2019, 09:56 AM #142
This is how the blade was contacting the bed before I started scraping.
Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.
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25th July 2019, 11:42 AM #143Deceased
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25th July 2019, 12:25 PM #144
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25th July 2019, 01:18 PM #145
Now for a look at the flatness of the bed instrumentally.
Here is the rig I used to set the plane up such that the bed is as close as I can get it to parallel to the top of the surface plate. The bed angle is 11.32o.
Setting my reference point as the left rear corner of the bed.
Indicator reading at left rear.JPG
Moving to the left front corner.
Indicator reading at left front.JPG
To the right front corner.
Indicator reading at right front.JPG
And finally to the right rear.
Indicator reading at right rear 1.JPG
I only messed up by about -0.0002" left to right and, by this gauge, pretty close to unmeasurable front to back. Now to see how it performs in cut testing.Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.
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25th July 2019, 07:14 PM #146
This is been quite impressive stuff so far Rob,even if some of it was hard to follow.
Cheers Matt
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25th July 2019, 07:26 PM #147
Rob,
I was re reading your excellent thread.
But please no more nude block plane pics.
I just noticed your lack of clothing in one of your pics this forum is viewed by all age groups.
Or at least leave the flip flops or thongs or whatever you call them State side on.
Cheers Matt[emoji85].
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25th July 2019, 11:18 PM #148
Prefer frying bacon?
From art history class I recall something about a bare foot implicating willingness or availability.
Shoes as symbols in art
Interpretation of a dream in which you saw <<Barefoot>>Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.
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20th October 2020, 11:48 AM #149
Where it counts
Sorry for the long hiatus, I've been very busy. This afternoon I just couldn't face any more contracts, lawyers, science and papers so I decided to get after this Lie Nielsen miter plane. I understand that you might say 'why bother?' concerning my efforts with the block plane discussed so far on this thread with justification. I'm not done with the block plane yet but now I'm going to address a plane where flatness may very well make a big difference in performance - a miter plane. A couple years back I bought a Lie Nielsen #51 miter plane in somewhat rough condition, the sole was slightly rust pitted. I've done some measurements and it's not quite square and not at all flat. Using 60 µm diamond powder and my 18" plate here is the progression.
5 min.
IMG_2242.jpg
10 min.
IMG_2243.jpg
30 min.
IMG_2244.jpg
On the other face too.
IMG_2246.jpg
60 min.
IMG_2252.jpg
As you can see, the sole is pretty flat from the manufacturer and therefore the relatively rapid progression to near flatness with the 60 µm diamond dust. I estimate that another couple of hours of effort will be needed to attain full flatness at this grit. Once done roughing in the flattening at the finer grits tends to go quicker. Then on to squaring up the perpendicular and fettling the shooting board so that the square, flat plane runs true.
Most planes have this banana shape sole fresh from the manufacturer, I guess that the machining of the mouth and or bed induces or releases internal tensions that cause the soles to flex a little.Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.
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20th October 2020, 01:12 PM #150
Welcome back Rob. I know you have been preoccupied of late, but if you are up for a little light recreation, could I draw your attention to these threads?
The basic concept:
2020-2021 Plane Building Challenge
The official launch:
PLANE CHALLENGE 2020 - 2021 - Judges corner
and the "Tips" section:
Tips, Techniques and Theory
The last is really on technical detail and covers a wide range of skill levels for the various participants.
I hope you have time to participate and if that is the case you will see the entries in the Homemade tools and jigs section of the handtools section of the Forum.
I think this thread of yours may well be of interest to people in the challenge for final flattening of their entries.
Regards
PaulBushmiller;
"Power tends to corrupt. Absolute power corrupts, absolutely!"
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