Thanks, fellows, for the advice---I will certainly be following it when I get to that point of completion. Al Messer --- Terry Lane <tel@xxxxxxxxxxx> wrote: > Yep, that's wot I do as well - run 'em in both > directions if possible & add > a lettle graphite powder to the oil > > > > > I always run my engines in, usually turning them > mechanically for a while > > (clamp on lathe bed with crankshaft in chuck, and > low revs works for me), > > with loads of oil everywhere. > > > > Then run on low pressure air, again with lots of > oil. > > > > By that time everything has loosened up, and a > look at the bore will > usually > > show it to have a nice smooth, but not mirror > finish. > > > > > > alan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx > > > > www.alanstepney.info > > Model Engineering, Steam Engine, and Railway > technical pages. > > > > ----- Original Message ----- > > From: "Allen Messer" <al_messer@xxxxxxxxx> > > To: "modeleng" <modeleng@xxxxxxxxxxxxx> > > Sent: Wednesday, August 25, 2004 4:03 PM > > Subject: [modeleng] Honing/lapping steam cylinders > > > > > > I know that the bore of a steam cylinder should be > > both round and parallel, but should the interior > > finish also be "mirror bright" or should we strive > for > > the "cross-hatched pattern" of the internal > combustion > > engine cylinder? > > > > Al Messer, confused in rainy Mid- Tenn. > > > > > > > > __________________________________ > > Do you Yahoo!? > > Yahoo! Mail Address AutoComplete - You start. We > finish. > > http://promotions.yahoo.com/new_mail > > MODEL ENGINEERING DISCUSSION LIST. > > > > To UNSUBSCRIBE from this list, send a blank email > to, > > modeleng-request@xxxxxxxxxxxxx with the word > "unsubscribe" in the subject > > line. > > > > MODEL ENGINEERING DISCUSSION LIST. > > > > To UNSUBSCRIBE from this list, send a blank email > to, > > modeleng-request@xxxxxxxxxxxxx with the word > "unsubscribe" in the subject > line. > > > > MODEL ENGINEERING DISCUSSION LIST. > > To UNSUBSCRIBE from this list, send a blank email > to, > modeleng-request@xxxxxxxxxxxxx with the word > "unsubscribe" in the subject line. > __________________________________ Do you Yahoo!? Yahoo! Mail - 50x more storage than other providers! http://promotions.yahoo.com/new_mail MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.