Month: August 2014

Check out these id od grinding images:

Image from page 225 of “Ground water in San Joaquin Valley, California” (1916)

Image by Internet Archive Book Images
Identifier: groundwaterinsan00mend
Title: Ground water in San Joaquin Valley, California
Year: 1916 (1910s)
Authors: Mendenhall, Walter C. (Walter Curran), 1871-1957 Stabler, Herman, 1880- Dole, Richard B. (Richard Bryant), 1880-1917
Subjects: Water-supply
Publisher: Washington : Govt. Print. Off.

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book

Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
a5O505ICQCQCQCQCQCQCQCQCOCQCQCOCQCQCQCQCQCQCQCQCQC 50505050505050505 ! co co co co co co co co

Text Appearing After Image:
STANISLAUS COUNTY. 201 S : :82g£?: : :S?8 : :g$ 8S8S :2:s co to t>- o S co 5 S3 !3 *4 oimm COCCM^3 (COWCOGOCO pppaiPPPPPPPPPPPPPPPPPPPPPPoQpafPPPP CO ;w ^ a 3* M -d> 73 V ££ w£ t^- tOtOOStOOiOO ) >C 00 00 P5 W Ni t» 00 to 50 CO CM CO «><N 00 to 02 05 CO 00 •-o•,-,I r^ .2 r^ .£ co t- ;oohn 2 d * •d** -o d -d -d w d dr^d,Oo^o^oooo^oooo •oBo3cooo3o©oo :pqpfqppqpqpqpqppqfqwpq ) 0) O :^!£, ) o o 1 PI Pi . O o :.a.a ! oot- id ^,2,3 ,2. ,2. ,2,2 > 55 © ^3 x3d d dd > o o ipqpq :::::: !1S b££ £^23 o o • .,3.3. q o :.S.S -d«-a M§^ £w>£ MMa O 3 o 3 B—i WPP PP >Os t-d>oooo—• ^^^o–^o^ i O «o ••••r-ioasoi-fcoeo-^oeo-^^toos11^oo ■flOfloioeaooooNOOoooo ,0000 ■—•——•00 05 00 00 05 05 03 02 00 02 05 03 05 00 ■dfl t-^od~-;ooo5- 3 ® » d l-d £ WWW,©oo • os oo oo cc oo t> P3 Ph Ph

Note About Images
Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability – coloration and appearance of these illustrations may not perfectly resemble the original work.

Hardened steel thrust washer

Image by duckophile
It’s a hardened race from a needle thrust bearing, 0.095" thick.
I ground the OD down to size and notched the ID in hopes of allowing some oil through to the surface against the bronze.
The surface is actually as smooth as a bearing race, the texture is an artifact of the grinding process that shows up in the flash.
Torrington TRD-2840, 1.75" ID, 2.5" OD, 0.125 thick, ground to around 2.1" OD to clear the crankcase.