tag:blogger.com,1999:blog-1592992209402300549.post5285729415991027277..comments2024-03-27T19:38:49.490-04:00Comments on The Silicon Graybeard: A Little Shop Talk - 3D Printing Internal Features SiGraybeardhttp://www.blogger.com/profile/00280583031339062059noreply@blogger.comBlogger9125tag:blogger.com,1999:blog-1592992209402300549.post-14250247948416726692021-04-19T19:55:08.318-04:002021-04-19T19:55:08.318-04:0030 Years ago I worked in a large foundry [Grey iro...30 Years ago I worked in a large foundry [Grey iron and ductile] and we tried to find a way to cast iron with threaded bolt holes. The best method was with a investment cast type process that used a styrofoam mold core. It was close but never consistant enough to work. It would have saved the company tremendous amont of money in drill bits and taps that we were buying.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-9106193448526962012021-04-19T10:10:00.846-04:002021-04-19T10:10:00.846-04:00Not sure what material you're printing with bu...Not sure what material you're printing with but ABS will shrink 2-3% as it cools.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-73595216195507381942021-04-19T09:44:56.255-04:002021-04-19T09:44:56.255-04:00That seems like a good idea and workaround about n...That seems like a good idea and workaround about not using a threaded insert. <br /><br />I went to McMaster Carr to look up threaded inserts and without a specific part type or number to look for, I could spend a day picking out a threaded insert.<br /><br />SiGraybeardhttps://www.blogger.com/profile/00280583031339062059noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-39700053862303421002021-04-19T09:28:18.204-04:002021-04-19T09:28:18.204-04:00This is the first time I've heard about elepha...This is the first time I've heard about elephant's foot, so the term will be helpful. <br /><br />Right after writing this, I looked at some open tabs I had. One was CTRL+Pew, a 3D printed gun site. <br /><br />Their <a href="https://ctrlpew.com/the-complete-getting-started-guide/" rel="nofollow">Complete Guide to Getting Started</a> includes a link to all3dp.com on calibrating the step numbers - after it calibrates the extruder first. <br /><br />I'd swear that within the last week, YouTube offered me a Chep video on calibrating the printer. I went to his page and looked for it but couldn't find it. SiGraybeardhttps://www.blogger.com/profile/00280583031339062059noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-9276519408539361782021-04-19T08:18:05.227-04:002021-04-19T08:18:05.227-04:00I managed to machine the internal and external thr...I managed to machine the internal and external threads for the PVC lampshade adapter, but it would have been so much easier to print it. <br /><br />I remember seeing a 3D print of an adjustable wrench. <br />Not printed and then assembled, but printed as one piece and the adjusting screw moves the jaws. <br />Yep. Like this one. <br />https://www.thingiverse.com/thing:139268<br /><br />Buying a printer is moving closer. <br /><br /><br />John in Phillyhttps://www.blogger.com/profile/16196033252818387245noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-50795430482040729042021-04-19T01:51:47.373-04:002021-04-19T01:51:47.373-04:00On one part I wanted a partial fill through most o...On one part I wanted a partial fill through most of the body, but a solid area to put a screw into. So I filled the thread region up with epoxy and drilled and tapped that.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-19586403009663835452021-04-19T01:05:44.132-04:002021-04-19T01:05:44.132-04:00There's a setting in the slicer that deals wit...There's a setting in the slicer that deals with this issue of material shrinkage/inconsistent extrusion called "horizontal expansion". <br /><br />I suggest you search with that term for some suggestions.<br /><br />But of course CHEP has a video on it.<br />https://youtu.be/UUelLZvDelURatushttps://www.blogger.com/profile/02546867391478669489noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-27334984740307798982021-04-19T00:57:14.856-04:002021-04-19T00:57:14.856-04:00Yep, that's what it looks like to meYep, that's what it looks like to me<br />Ratushttps://www.blogger.com/profile/02546867391478669489noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-82050985485046674512021-04-18T22:31:47.649-04:002021-04-18T22:31:47.649-04:00your getting elephants foot in your print. rafts w...your getting elephants foot in your print. rafts work but you end up with more waste, or you can make your model have a chamfer to account for the "elephant foot" few other fixes if you search for something like "3d printing elephants foot fix"Alhttps://www.blogger.com/profile/09421009658385402439noreply@blogger.com