Skewed Reconstruction II- Reverse Engineering The Skew Hand Plane

Progress Report II:
Since last class I have completed (or nearly completed I am still struggling with boolean union for the screws) a few of the more complicated objects. The first is the plane iron itself, the cutting blade for the hand plane.

 
 

 First I drew the plane iron from measurements I took with my calipers. A few of the curves were hard to measure and the cutting edge was not a perfectly straight line (I need to work on my honing skills!). So after getting the rough shape I brought in an image to check against the measurements I could take and checked online to confirm the angle of the cutting edge. I adjusted the curves and the shaped using both measurements and the photos.

Below I have removed a curved slot for the adjustment screw head and tried to show the stages for removing the curved beveled front of the plane iron by drawing a curve, sweeping an angled line, and boolean splitting the edge. 

 

Before I get to the next part I ran into some strange issues, I'll call them rendering issues, even though I am working in shaded mode. They objects seem fine but show up on my screen as broken or very messed up. It happened with a few objects, particularly screw threads or any multi faceted/repeating surface.
When I move the object it seems fine but sometimes it wold appear as a locked object and I could not continue working on it until I undid or copied the object.  I really don't know what is happening, maybe its an issue with my laptop's abilities...

Ok so the next part I tackled was the threaded screw that tensions the cap iron to the plane iron....this guy ↙ 

Below are the steps to making the object. -I started with the large flat head of the screw and added the bump in the center and the lips at the top and bottom of the exterior. -After that I added the knurled edge by revolving the rectangular indented shape and used boolean difference to extract the cutouts. -Next I added the lower part and the threads, then chamfered the bottom of the threads by using a revolved curve surface at a 45 degree to trim away the bottom of the threads and the central cylinder. (Again after adding surfaces to cap the threads I still can't get the threads to boolean to the cylinder) 

Below are some details of the object:

Next I completed work on the pan head assembly screw. 

-I recreated the threads after class so they were based on pitch rather than number of turns. I also extended the spiral so that I would be able to have the threads continue off the screw body and trim the excess away so it matched the actual screw. 

      -(Also is there a way to extend a spiral? when I extend curve by arc it extends in only in 2D...)

-I then used boolean difference to remove the slot at the top and this time when I boolean unioned the whole object the screw threads attached to the body of the screw...no idea why it worked this time!

 

Next up is the knurled depth adjustment screw that moves the plane iron forward and back.

 

So this guy was much more challenging because of the interior threads and the surface of the upper portion. I couldn't get the interior threads to booleon difference from the cylinder so I used curve from object to get the top and bottom of the thread spiral then lofted between the two and joined the resulting surface to the thread object. 

This object required many steps to get it sorted! After the threaded interior I tackled the upper surface. I thought about trying to figure out a way to wrap the surface but I am not sure how to do that, maybe something to look at in class this week? I tried the drape tool but got some very crazy results!So I took a row of the diamond shapes and arrayed them then arrayed an offset of the shapes to get the surface pattern. The problem again is getting it to union with the rest of my object, I tried to use the surface to boolean difference to get the surface but again it failed so maybe something I can return to when I can use a drape tool. 

I got a bit distracted by playing with the render tools 

because the lines from the patterned surface were showing 

up in shaded mode so the rendered mode looked better

 The last object I completed for this progress report was a pan head screw that holds the plane iron and the cap iron in place. I used the same approach as the other screws but included a rounded pan head at the top. So far all the screws I have worked on are different in length width and head shape!





Next I got started on the second most complex shape, the cap iron ↓. I started  by drawing the flattened bottom portion by measuring and bringing in a photo for the irregular arches at the tops. That is about as far as I got before I decided I needed a plan of attack for the rest of it.

 

That's all for progress report II!