Pete.
Member
- Messages
- 14,147
- Location
- Kent, UK
I'm working on a square that I got last year from @pressbrake1 which I'd started to scrape but got put aside for other work. I know a couple of other members have also got one of these squares, it was time ti put mine into use as it will come in very handy when setting up my mill rebuild.
I made a timber frame from scrap 4x2 to hold it. Used masking tape to protect the edges from my metal bench and to stop it picking up specks of timber and dropping them on my plate. I already had it roughed out. te iron is nice and soft so easy to scrape without chattering.
A few rounds of scraping and I got the face down pretty flat with just a couple of small island low spots.
A few more rounds and I was getting a nice even spread of spots. This face is pretty flat now.
Did some point splitting and cleaned it up to check the flatness. I put my repeat-o-meter on it. This tool is just over half the length of the 15" face but it will record deviations from any of the contact points so even a short travel from here to the end will show any out of straightness.
Here's the results. Less than 1 micron of deviation.
Set up now to do the short edge. This obviously needs to both flat and perpendicular to the long face.
More to follow as I scrape this in.
I made a timber frame from scrap 4x2 to hold it. Used masking tape to protect the edges from my metal bench and to stop it picking up specks of timber and dropping them on my plate. I already had it roughed out. te iron is nice and soft so easy to scrape without chattering.
A few rounds of scraping and I got the face down pretty flat with just a couple of small island low spots.
A few more rounds and I was getting a nice even spread of spots. This face is pretty flat now.
Did some point splitting and cleaned it up to check the flatness. I put my repeat-o-meter on it. This tool is just over half the length of the 15" face but it will record deviations from any of the contact points so even a short travel from here to the end will show any out of straightness.
Here's the results. Less than 1 micron of deviation.
Set up now to do the short edge. This obviously needs to both flat and perpendicular to the long face.
More to follow as I scrape this in.