The Forestry Forum

General Forestry => General Board => Topic started by: hackberry jake on December 29, 2018, 02:33:57 AM

Title: Lapping plate shop project
Post by: hackberry jake on December 29, 2018, 02:33:57 AM
I watched a YouTube video about a guy making three lapping plates and lapping them to each other to achieve a perfectly flat set of plates to lap other objects to. I have very little need for lapping plates but the project sounded fun to me. Started with a 5-3/4" diameter cast iron cylinder. Cut three plates off with the band saw and lathed them all to a little over 1-1/4" thick. Then I loaded them on the cnc router and grooved both faces. I got a little fancy on one side of them. Now just waiting on the abrasive powder to come in and I'll start lapping.

(https://forestryforum.com/gallery/albums/userpics/25938/IMG_20181229_002749930.jpg?easyrotate_cache=1546068728)
 
 

(https://forestryforum.com/gallery/albums/userpics/25938/IMG_20181229_002819838.jpg?easyrotate_cache=1546068784)
 
Title: Re: Lapping plate shop project
Post by: scgargoyle on December 29, 2018, 06:01:48 AM
I used a similar method to hand scrape three 36" cast iron surface plates. It was a LOT of work, but rewarding.