<div dir="ltr"><div>Awesome tip on modifying the bits. I'm thinking that it would also extend to drilling sheet metal where the bits tend to grab. </div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><br></div></div></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Mar 30, 2021 at 8:46 PM chuck.steger--- via Woodworkers <<a href="mailto:woodworkers@lists.sawdusters.org">woodworkers@lists.sawdusters.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div lang="EN-US" style="overflow-wrap: break-word;"><div class="gmail-m_5369924826653411675WordSection1"><p class="MsoNormal"><span style="font-size:14pt;font-family:Arial,sans-serif">Cosmin,<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:14pt;font-family:Arial,sans-serif"> Great tip thanks!<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:14pt;font-family:Arial,sans-serif"><u></u> <u></u></span></p><div><p class="MsoNormal"><span style="font-size:18pt;font-family:"Brush Script MT",serif">Chuck<u></u><u></u></span></p></div><p class="MsoNormal"><span style="font-size:14pt;font-family:Arial,sans-serif"><u></u> <u></u></span></p><div><div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0in 0in"><p class="MsoNormal"><b>From:</b> Woodworkers <<a href="mailto:woodworkers-bounces@lists.sawdusters.org" target="_blank">woodworkers-bounces@lists.sawdusters.org</a>> <b>On Behalf Of </b>Cosmin Dini via Woodworkers<br><b>Sent:</b> Tuesday, March 30, 2021 4:49 PM<br><b>To:</b> <a href="mailto:woodworkers@sawdusters.org" target="_blank">woodworkers@sawdusters.org</a><br><b>Cc:</b> Cosmin Dini <<a href="mailto:wm_crash@hotmail.com" target="_blank">wm_crash@hotmail.com</a>><br><b>Subject:</b> Re: [Woodworkers] Copper metal working<u></u><u></u></p></div></div><p class="MsoNormal"><u></u> <u></u></p><div><p class="MsoNormal"><span style="font-size:12pt;color:black">If you are going to drill the copper, you might consider modifying a drill bit to be more suitable for the operation. Have a look:<u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-size:12pt;color:black"><u></u> <u></u></span></p></div><div><p class="MsoNormal"><span style="font-size:12pt;color:black"><a href="https://www.youtube.com/watch?v=pAngKHIZgyA" target="_blank">https://www.youtube.com/watch?v=pAngKHIZgyA</a><u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-size:12pt;color:black"><u></u> <u></u></span></p></div><div><p class="MsoNormal"><span style="font-size:12pt;color:black">If you are going to cut the sphere, you can get quite far with a hacksaw. Cut around so the final break is in the middle. Then it's not that difficult to sand flat the flat portion of the half sphere.<u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-size:12pt;color:black"><u></u> <u></u></span></p></div><div><p class="MsoNormal"><span style="font-size:12pt;color:black">cheers,<u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-size:12pt;color:black">Cosmin<u></u><u></u></span></p></div><div><div style="margin-top:12pt;margin-bottom:12pt;min-width:424px" id="gmail-m_5369924826653411675LPBorder_BVTaHR0cHM6Ly93d3cueW91dHViZS5jb20vd2F0Y2g:dj1wQW5nS0hJWmd5QQ.."><table border="1" cellspacing="4" cellpadding="0" width="100%" style="width:100%;border:1pt solid rgb(200,200,200)"><tbody><tr><td valign="top" style="border:none;padding:9pt 27pt 9pt 9pt"><div style="margin-right:9pt;overflow:hidden" id="gmail-m_5369924826653411675LPImageContainer845298"><p class="MsoNormal"><a href="https://www.youtube.com/watch?v=pAngKHIZgyA" target="_blank"><span style="text-decoration:none"><img border="0" width="240" height="180" style="width: 2.5in; height: 1.875in;" id="gmail-m_5369924826653411675_x0000_i1027" src="https://www.bing.com/th?id=OVP.JwfpytqVhxgkyLNo5OnjcwHgFo&pid=Api"></span></a><u></u><u></u></p></div></td><td width="100%" valign="top" style="width:100%;border:none;padding:9pt 27pt 9pt 9pt"><div style="margin-right:6pt;margin-bottom:9pt" id="gmail-m_5369924826653411675LPTitle845298"><p class="MsoNormal"><span style="font-size:16pt;font-family:"Segoe UI Light",sans-serif"><a href="https://www.youtube.com/watch?v=pAngKHIZgyA" target="_blank"><span style="text-decoration:none">Spare parts #7 - Modifying A Twist Drill For Drilling Brass</span></a><u></u><u></u></span></p></div><div style="margin-right:6pt;margin-bottom:9pt;max-height:100px;overflow:hidden" id="gmail-m_5369924826653411675LPDescription845298"><p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Segoe UI",sans-serif;color:rgb(102,102,102)">Modifying A Twist Drill For Drilling Brass, by Clickspring Drilling brass with a standard twist drill carries a hazard with it, that can be easily avoided with a simple modification to the drill bit. Its simple, fast and very effective. The main project video that this video is related to is "How To Make A Clock In The Home Machine Shop - Part ...<u></u><u></u></span></p></div><div id="gmail-m_5369924826653411675LPMetadata845298"><p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Segoe UI",sans-serif;color:rgb(166,166,166)"><a href="http://www.youtube.com" target="_blank">www.youtube.com</a><u></u><u></u></span></p></div></td></tr></tbody></table></div></div><p class="MsoNormal"><u></u> <u></u></p><div><div><p class="MsoNormal"><span style="font-size:12pt;color:black"><u></u> <u></u></span></p></div><div class="MsoNormal" align="center" style="text-align:center"><hr size="2" width="98%" align="center"></div><div id="gmail-m_5369924826653411675divRplyFwdMsg"><p class="MsoNormal"><b><span style="color:black">From:</span></b><span style="color:black"> Woodworkers <<a href="mailto:woodworkers-bounces@lists.sawdusters.org" target="_blank">woodworkers-bounces@lists.sawdusters.org</a>> on behalf of Greg via Woodworkers <<a href="mailto:woodworkers@lists.sawdusters.org" target="_blank">woodworkers@lists.sawdusters.org</a>><br><b>Sent:</b> Tuesday, March 30, 2021 9:24 PM<br><b>To:</b> Sawdusters <<a href="mailto:woodworkers@sawdusters.org" target="_blank">woodworkers@sawdusters.org</a>><br><b>Cc:</b> Greg <<a href="mailto:dasnipa@gmail.com" target="_blank">dasnipa@gmail.com</a>><br><b>Subject:</b> Re: [Woodworkers] Copper metal working</span> <u></u><u></u></p><div><p class="MsoNormal"> <u></u><u></u></p></div></div><div><div><p class="MsoNormal">How about a homemade extruder?<u></u><u></u></p></div><p class="MsoNormal"><u></u> <u></u></p><div><div><p class="MsoNormal">On Tue, Mar 30, 2021, 5:23 PM Jason Beam via Woodworkers <<a href="mailto:woodworkers@lists.sawdusters.org" target="_blank">woodworkers@lists.sawdusters.org</a>> wrote:<u></u><u></u></p></div><blockquote style="border-top:none;border-right:none;border-bottom:none;border-left:1pt solid rgb(204,204,204);padding:0in 0in 0in 6pt;margin-left:4.8pt;margin-right:0in"><div><p class="MsoNormal" style="margin-bottom:12pt">I like this suggestion of drilling on the lathe a lot more. The grabbiness of the copper is a lot less of a factor when you're feeding with the tailstock of a lathe. <br><br><u></u><u></u></p><div><p class="MsoNormal">Jason Beam<br><b><a href="https://beamerweb.com" target="_blank">Beamer's Brands</a></b><u></u><u></u></p></div><div><p class="MsoNormal">On 3/30/2021 2:18 PM, Richard Allen via Woodworkers wrote:<u></u><u></u></p></div><blockquote style="margin-top:5pt;margin-bottom:5pt"><div><p class="MsoNormal">I have turned copper on a wood lathe before. I would take a 7/8” rod about 2” long an turn a sphere at one end. The end being held by the lathe could be turned down to a suitable diameter so the sphere would be attached to the rod as a single piece of copper. Another option would be to drill and tap the 1” sphere and thread some of your 3/8” rod to screw into the taped sphere. Copper drills fine. Plan on discarding the drill bit as sometimes the copper will “weld” to the drill bit. I would do the drilling with the 1” sphere in a chuck on the lathe. I would turn down the 1” sphere by mounting the 3/8” rod in a chuck on the lathe. Copper turns with a scraper. It is a fairly slow process but 10 minutes of scraper work and 15 minutes of sanding and polishing should give you a sphere shape to your likening<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal"><br><br><u></u><u></u></p><blockquote style="margin-top:5pt;margin-bottom:5pt"><p class="MsoNormal" style="margin-bottom:12pt">On Mar 30, 2021, at 5:02 PM, chuck.steger--- via Woodworkers <a href="mailto:woodworkers@lists.sawdusters.org" target="_blank"><woodworkers@lists.sawdusters.org></a> wrote:<u></u><u></u></p></blockquote></div><blockquote style="margin-top:5pt;margin-bottom:5pt"><div><p class="MsoNormal"> <u></u><u></u></p><div><p class="gmail-m_5369924826653411675xmsonormal"><span style="font-size:12pt;font-family:Arial,sans-serif">Hope everyone is safe and healthy!</span><u></u><u></u></p><p class="gmail-m_5369924826653411675xmsonormal"><span style="font-size:12pt;font-family:Arial,sans-serif"> I need some advice on working solid copper. I’ll give you some context on what I’m doing.</span><u></u><u></u></p><p class="gmail-m_5369924826653411675xmsonormal"><span style="font-size:12pt;font-family:Arial,sans-serif"> I designing and building a Heritage Box for someone. Everything that goes into the design and construction will have some elements from their cultural background. Their mother and grandparents lived and worked in a copper mining town in Chile and copper was a big part of their lives. To bring copper into the design, I will attach the legs to the box using copper rods. Since the legs taper, I will use 1/8”, 3/16”, and ¼” rods and leave a ¼” gap between the legs and box. But this is subtle and I wanted to add something else. So I want to add a copper sphere at the top of the box. I drew up the design full scale and the sphere looks good at ¾”. So, I started researching copper spheres and what I found are jewelry spheres ½” and less or solid spheres 1” and greater. I ordered the 1” spheres which are actually used for plating copper.</span><u></u><u></u></p><p class="gmail-m_5369924826653411675xmsonormal"><span style="font-size:12pt;font-family:Arial,sans-serif"> So here are some of my issues/questions/concerns:</span><u></u><u></u></p><ul type="disc"><li class="MsoNormal"><span style="font-size:12pt;font-family:Arial,sans-serif">Is there any way possible to reduce the diameter? I thought about some kind of holding contraption on a lathe and then using files but that just sounds like a bad idea.</span><u></u><u></u></li><li class="MsoNormal"><span style="font-size:12pt;font-family:Arial,sans-serif">The sphere weights in at 3 oz. Now that may seem light but it’s a little heftier that I wanted because I don’t want it to tip the box over when hinged open. The box footprint will be 8”x12” so it may be OK. I will build a prototype as I always do so I’ll find out. Also with a prototype it will be easy to see if 1” is too big. A ¾” hollow sphere would be perfect but I can’t find that.</span><u></u><u></u></li><li class="MsoNormal"><span style="font-size:12pt;font-family:Arial,sans-serif">Will solid copper drill OK? I would like to drill a hole for a rod to anchor the sphere to the box. I will epoxy the sphere to a cradle but a rod would be so much more secure IMO. And, given the weight, I would feel better.</span><u></u><u></u></li><li class="MsoNormal"><span style="font-size:12pt;font-family:Arial,sans-serif">Here’s another take …. Is there a way to cut the sphere in ½” I only have WW bandsaws so even with a metal blade, WW bandsaws run too fast, don’t they? The thought process here is maybe I take the two half spheres and attach them to the side of the box as an adornment. The design will be mostly Asian so spheres might look good. </span><u></u><u></u></li></ul><p class="gmail-m_5369924826653411675xmsonormal"><span style="font-size:12pt;font-family:Arial,sans-serif"> So you can see the design is in total flux. I’ve started building the prototype out of pine.</span><u></u><u></u></p><p class="gmail-m_5369924826653411675xmsonormal"><span style="font-size:12pt;font-family:Arial,sans-serif"> </span><u></u><u></u></p><p class="gmail-m_5369924826653411675xmsonormal">Chuck<u></u><u></u></p><p class="gmail-m_5369924826653411675xmsonormal"> <u></u><u></u></p></div><p class="MsoNormal">_______________________________________________<br>I want to be one of my friends for a day so I can see how cool it is to hang out with me.<br><a href="mailto:Woodworkers@lists.sawdusters.org" target="_blank">Woodworkers@lists.sawdusters.org</a><br><br>To unsubscribe from this list -<br><a href="http://lists.sawdusters.org/listinfo.cgi/woodworkers-sawdusters.org" target="_blank">http://lists.sawdusters.org/listinfo.cgi/woodworkers-sawdusters.org</a><br><br>Address to contact the list ADMIN staff -<br><a href="mailto:woodworkers-owner@lists.sawdusters.org" target="_blank">woodworkers-owner@lists.sawdusters.org</a><u></u><u></u></p></div></blockquote><p class="MsoNormal"><br><br><u></u><u></u></p><pre>_______________________________________________<u></u><u></u></pre><pre>I want to be one of my friends for a day so I can see how cool it is to hang out with me.<u></u><u></u></pre><pre><a href="mailto:Woodworkers@lists.sawdusters.org" target="_blank">Woodworkers@lists.sawdusters.org</a><u></u><u></u></pre><pre><u></u> <u></u></pre><pre>To unsubscribe from this list -<u></u><u></u></pre><pre><a href="http://lists.sawdusters.org/listinfo.cgi/woodworkers-sawdusters.org" target="_blank">http://lists.sawdusters.org/listinfo.cgi/woodworkers-sawdusters.org</a><u></u><u></u></pre><pre><u></u> <u></u></pre><pre>Address to contact the list ADMIN staff -<u></u><u></u></pre><pre><a href="mailto:woodworkers-owner@lists.sawdusters.org" target="_blank">woodworkers-owner@lists.sawdusters.org</a><u></u><u></u></pre></blockquote><p class="MsoNormal"><u></u> <u></u></p></div><p class="MsoNormal">_______________________________________________<br>I want to be one of my friends for a day so I can see how cool it is to hang out with me.<br><a href="mailto:Woodworkers@lists.sawdusters.org" target="_blank">Woodworkers@lists.sawdusters.org</a><br><br>To unsubscribe from this list -<br><a href="http://lists.sawdusters.org/listinfo.cgi/woodworkers-sawdusters.org" target="_blank">http://lists.sawdusters.org/listinfo.cgi/woodworkers-sawdusters.org</a><br><br>Address to contact the list ADMIN staff -<br><a href="mailto:woodworkers-owner@lists.sawdusters.org" target="_blank">woodworkers-owner@lists.sawdusters.org</a><u></u><u></u></p></blockquote></div></div></div></div></div>_______________________________________________<br>
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