Gunmetal fittings for T21
This is parting off my spider hub (for want of a better name) from a prepared bar.
Once these are parted off they need to be trued up to the precise length.
Using the CNC mill to cut the five legs out of my spider.
Once the legs have had their finishing cut it is desirable to put a small chamfer on the ends as this will assist with entry and peining.
Finished legs
Checking for fit on a test piece of boxwood. Also showing the spigot on the opposite side to the legs.
At this point most of you will have worked out where this item is to be fitted. More will be explained as the blog progresses.
A ******* load of work!
Blades
Grinding blades nothing exciting. I have chosen to use A2 as usual, as specified elsewhere :
http://www.holteyplanes.com/tech_blades1.html
Grinding the facet on the blades
You will notice that every surface is precisionally ground. You don’t get this anywhere else so far.
Of course we mustn’t forget the bevel, which is set at 25 deg.
Karl,
ordinarily the words Blades and nothing exciting would be acceptable. But these are Holtey blades and they are exciting me immencely !!!
Archie.
Comment by Archie — December 26, 2009 @ 10:01 pm
Hi Archie
Modesty prevents me from saying too much!
k
Comment by admin — December 27, 2009 @ 1:34 pm
Amazing work.It’s a pity that is untuchable for the ordinery people. My respects
Comment by spiros cheimarios — June 27, 2010 @ 6:49 am
I’m curious, why machine the spiders from rod rather than, say, investment casting them and finishing them in the mill?
Comment by Al — June 16, 2011 @ 7:41 am
Hi
I make the spiders like this because it is logically easier and cheaper. I only made a dozen planes so it would have been a poor investment as an investment casting! If I was to take them from a casting I would need a carrier for work holding which would require a lot more material.
You must remember I am only a small business and items like this are no problem to make on the CNC mill.
k
Comment by admin — June 16, 2011 @ 9:29 am