Quotetekkydave I don't know if anyone else has discovered this but I thought I would share it. I wanted to drill a 27mm piezo but was nervous about drilling it. I remembered I have a cd-punch, the type used for making CD/DVDs unreadable. It works quite well (see attached images). The hole is about 5.8mm diameter with minimal distortion of the disc. That's pretty clever.by hayseed_byte - General
Oh right. I forgot about Patreon.by hayseed_byte - CoreXY Machines
I realize this post is several weeks old but thought I'd chime in anyway. The rino uses an 8mm diameter output shaft with a 2mm key. Here's a pdf.by hayseed_byte - CoreXY Machines
I think a tip jar might be better suited than ads on your blog. Getting a few pennies per visit probably won't add up to much. However, most of your readers are probably a lot like me. Someone stumbling through building/upgrading a 3d printer with no formal training/education in engineering. Personally, I'd be happy to drop some cash into a digital tip jar whenever I learn something useful or whby hayseed_byte - CoreXY Machines
Quotepiper3d the_digital_dentist, you have some epic job documented in this thread. Multiple innovative solutions. People may read it as a book on how to design your own printer. Congratulations on a great job! I basically used this thread along with his blog as an instruction book while I was designing and building my modified d-bot. I really do feel like a book would be a good idea. Having allby hayseed_byte - CoreXY Machines
If you haven't picked a supplier yet, check out trimcraftaviationrc.com. They've got good prices and shipping is reasonable.by hayseed_byte - General
Quoteampapa Ouch! $28 + shipping for a drive shaft with a 2mm keyway.. ampapa, Looks like MMC has pretty much the best price. I'd make it myself but I only have standard end mills so the cost of the shaft material plus $10-15 for a 2mm end mill is going to be well over $40. So $28+shipping from MMC knowing it'll be here in just a couple days and be well made seems reasonable to me. Let me knowby hayseed_byte - CoreXY Machines
Nice. THK makes quality parts, no doubt. You've done an excellent job with this build/design. You used quality parts where it was important but didn't waste money on non-critical stuff. I'm having a ball sourcing the parts. Feels good to build an industrial grade machine as opposed to the poorly designed plywood knockoff that's sitting next to me at the moment.by hayseed_byte - CoreXY Machines
Quotethe_digital_dentist They aren't that hard to get: Amazon has a lot of ball stud listings, too, but you need to be able to adjust them by getting a wrench on them from under the bed plate, so be sure to leave room. The threads are pretty coarse, too, but manageable. I don't think there are a lot of people copying the design, but maybe there will be a few more once I get the printed gearby hayseed_byte - CoreXY Machines
The kinematic mount for the bed is genius but the ball head screws seem to be a little difficult to source. Has anyone considered using ball studs for gas springs? They're widely available and as cheap as can be. Also, if the ebay guy gets tired of machining shafts for everyone copying DD's build (such as myself), MMC sells keyed drive shafts at pretty reasonable prices. Gotta love Mcmaster-Carr.by hayseed_byte - CoreXY Machines
Quotethe_digital_dentist Yup, keyed shaft. I didn't have the tooling to do it, so I contacted a guy on ebay who sells short keyed shafts for Rinos and paid him about $20 (IRIC) to make a long one. The keyed shaft can still slide out of the gearbox, so I used lock rings on either side of it, though placement of the pulleys and pillow blocks at the ends of the shaft could also keep the shaft fromby hayseed_byte - CoreXY Machines
Quoteprintman @digital_dentist I looked at Rino block and not sure how you mounted the shaft to that. Rino has 8mm hole diameter with a little groove on it. Did you cut a groove to the shaft and put there a bar or something to connect the shaft with the Rino block? That slot is for a keyed shaft. Basically a shaft with a matching slot then you slide a piece of keystock into the slot on the shaftby hayseed_byte - CoreXY Machines
QuoteMoriquendi Steady hands are the key, I have to watch how much coffee I drink. Once you get into the swing of it it goes fairly fast however and as you can see in the video I've put a lot of effort into making tools and equipment to make the process faster. There are significant set up costs involved with having the PCB assembled in China though we will probably get to a point where that becby hayseed_byte - General