Bill - that's the best explanation I've ever heard on the difference between tuck shrinking and 'grab and shove' shrinking! I am really enjoying your video series, and look forward to what's coming next!
Great comparison between the different machines. It is great to know the different way to do things. So you can adapt your process for different parts. I worked with Bill M years ago. A great guy that is a wealth of information and always willing to help.
Thanks for posting. Really great explanations of the fundamental of shrinking without all the hype of so many RU-vid videos. Love the SpinalTap reference. Video style is perfect. Keep it coming
I agree with your hypothesis of grains that were elongated to a large degree in the Ekhold (sp?) were changed to a rounder shape in the planishing hammer. A very interesting point and demonstration.
Outstanding presentation of critical techniques, and differences, that every shaper should know. I've visited Hartmut Eckold's factory in Switzerland and admire their product line, but I also know that too many novice shapers fall in love with equipment rather than invest their time developing skills. Most European coachbuilders have FAR less equipment than American shops, and even hobbyists, but they are very proficient in using their skills to solve problems. Your presentation champions putting the role of expensive equipment in the proper perspective. I HOPE all shapers take your lesson to heart. Thanks again for a great video.
Great video very educational, the no mar dies are made from G12 fiberglass, if you want to make some. We have several Eckold machines (in a large aircraft hangar in the southeastern US) and had made dies on our router in the past, It's tough stuff. Our machinist told us, never again.
As a metallurgical engineer and a still learning metal shaper your explanations are outstanding and very easy to follow. I might suggest that your hypothesis on stress relieving is close enough. I would think that the planishing is adding some expanding cold work that is relieving some of the residual compressive stresses that the shrinking imparted…regardless, it’s the fact that you know how it works. Thank you! By the way, you’re too hard on yourself regarding the video quality…it’s fine for what we need!
