tag:blogger.com,1999:blog-1592992209402300549.post8577029969343448724..comments2024-03-28T08:06:43.198-04:00Comments on The Silicon Graybeard: Finally Done With The Replacement SiGraybeardhttp://www.blogger.com/profile/00280583031339062059noreply@blogger.comBlogger13125tag:blogger.com,1999:blog-1592992209402300549.post-32107509320740823712018-06-10T10:38:03.433-04:002018-06-10T10:38:03.433-04:00I need to do some looking around, but not sure I c...I need to do some looking around, but not sure I can get to it this weekend. "Previous arrangements".<br />SiGraybeardhttps://www.blogger.com/profile/00280583031339062059noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-67848046028289559532018-06-09T02:22:34.943-04:002018-06-09T02:22:34.943-04:00Oops, looks like Airgas wants you to buy 10 at a t...Oops, looks like Airgas wants you to buy 10 at a time. And it is not clear to me if the discs would be available at your local Airgas or just online.<br /><br />I can send you a couple of these discs to try out if you are interested.Titaniumboyhttps://www.blogger.com/profile/02955167742828475135noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-5528244110764752492018-06-08T23:15:37.423-04:002018-06-08T23:15:37.423-04:00If you search for Scotch-Brite Wheel you will find...If you search for Scotch-Brite Wheel you will find wheels like the EXL and such that are meant for deburring. They are expensive at roughly $55-$60.<br /><br />What you really want to try is the Standard Abrasives 860708 disc. 6” diameter, 1/2” hole, Very Fine. Much less expensive at $2.50-$3.00 each. They look use like a maroon scotch-bribe pad in a wheel shape.<br /><br />I use two of these discs mounted side by side on my bench grinder. The Airgas picture shows blue, but they are really maroon colored.<br />http://www.airgas.com/product/Tools-%26-Hardware/Abrasives/Other-Abrasive-Products/Non-Woven-Abrasives/p/STA860708Titaniumboyhttps://www.blogger.com/profile/02955167742828475135noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-16570369378437365572018-06-08T14:42:01.406-04:002018-06-08T14:42:01.406-04:00That's what compressed air is for, SiG...That's what compressed air is for, SiG...Mark Matisnoreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-59546336434558695482018-06-08T09:15:32.244-04:002018-06-08T09:15:32.244-04:00Leigh - I have Scotch Brite pads that I've hel...Leigh - I have Scotch Brite pads that I've held against parts rotating in the lathe but didn't know they were available for the bench grinder. Thanks!<br /><br />Time to hit the catalogs. <br /><br />John - the only polishing media have in the tumbler is corn cob. Never tried it on aluminum so I don't know if it works or not. Based on primer pockets, I will end up picking pieces of corn cob out from between the fins. <br /><br />SiGraybeardhttps://www.blogger.com/profile/00280583031339062059noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-16817248099319370092018-06-08T06:57:12.872-04:002018-06-08T06:57:12.872-04:00After taping off what you don't want affected,...After taping off what you don't want affected, and research on the correct media, maybe a vibratory cartridge case cleaner, or a rock tumbler.<br />Might be you have exactly the correct tool already from jewelry making.<br />The part looks great.John in Phillyhttps://www.blogger.com/profile/16196033252818387245noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-46979089774323629162018-06-08T04:46:15.385-04:002018-06-08T04:46:15.385-04:00You could use a Scotch-Brite wheel mounted in a be...You could use a Scotch-Brite wheel mounted in a bench grinder. It gives a nice finish on metal.<br /><br />Leigh<br />Whitehall, NYLeighnoreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-77053049626185461582018-06-07T23:26:09.964-04:002018-06-07T23:26:09.964-04:00Graphite, huh?
I might be tempted to go that rout...Graphite, huh?<br /><br />I might be tempted to go that route. Self lubrication should allow a tighter fit, increasing efficiency.drjimhttps://www.blogger.com/profile/05647484115197408897noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-23047165611147691712018-06-07T23:20:10.585-04:002018-06-07T23:20:10.585-04:00I don't have one. I've been using a needl...I don't have one. I've been using a needle file manually. <br /><br />Slow. Tedious. OTOH, it's not terrifying.SiGraybeardhttps://www.blogger.com/profile/00280583031339062059noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-90304805533338968232018-06-07T22:58:04.644-04:002018-06-07T22:58:04.644-04:00Any good [easy] way to deburr the cylinder?
Thx,
...Any good [easy] way to deburr the cylinder?<br /><br />Thx,<br />Erik in Colo.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-26607913590287765982018-06-07T22:55:05.261-04:002018-06-07T22:55:05.261-04:00Notice how precisely he specifies the allow That&#...<i>Notice how precisely he specifies the allow</i> That's allo<b>y</b> - not allow.SiGraybeardhttps://www.blogger.com/profile/00280583031339062059noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-85837402918434927832018-06-07T22:53:20.620-04:002018-06-07T22:53:20.620-04:00The piston is a way down the road, but the book sa...The piston is a way down the road, but the book said, "cast iron, bronze or cold rolled steel", so I bought a bar of 1" diameter CRS. (Notice how precisely he specifies the allow :-D ) It's a little undersized, so I made the cylinder ... (trying to remember) like 0.980. I'll turn the piston to fit the cylinder. <br /><br />Since then, I've come across a few guys who recommend using graphite instead of any of those metals. I might pick up a graphite rod. <br /><br />Like I say, that's a few parts away. <br /><br />SiGraybeardhttps://www.blogger.com/profile/00280583031339062059noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-78527318508500328022018-06-07T20:59:14.455-04:002018-06-07T20:59:14.455-04:00How are you going to turn and finish the piston?
...How are you going to turn and finish the piston?<br /><br />What clearance are you shooting for?<br /><br />I know you'll post them, I just can't wait....!drjimhttps://www.blogger.com/profile/05647484115197408897noreply@blogger.com