Search found 1417 matches

by elf
Fri Aug 16, 2019 12:31 am
Forum: General Discussion Forum and Community Announcements
Topic: extending life of butterfly bait / fast banana ripening??
Replies: 2
Views: 2479

Put some other (already ripe) fruit which ripens with ethylene in a brown paper bag with the bananas.

p.s. https://www.amazon.in/Ethylene-gas-frui ... B07CGLT4FM
by elf
Sun Jul 28, 2019 12:12 pm
Forum: Equipment Discussions
Topic: Potential stack and stitch rig
Replies: 20
Views: 4596

Look at how the vertical extrusion is held to the horizontal. I expect I'll put a diagonal strut "behind" on each side, but I don't have a great way to measure the 90º. With a part like this , you don't need to measure 90 degrees. Once installed you can use the camera and Zerene Stacker to precisel...
by elf
Wed Jul 24, 2019 2:42 pm
Forum: Equipment Discussions
Topic: Potential stack and stitch rig
Replies: 20
Views: 4596

Thanks guys. Unless I'm misinterpreting, ebay 352575728985 has T8 x 1mm , 200mm long with a nut, for $3.89. And 272767923336 is a T8mm x 1mm anti backlash, though I'm thinking that gravity would make it redundant? Not sure where an idler might best go. It's not much like the Wemacro stand. A and B ...
by elf
Fri Jul 19, 2019 10:19 pm
Forum: Equipment Discussions
Topic: TMC5130A-TA BOB & ARDUINO UNO
Replies: 49
Views: 17238

I used an Uno in my first automated stacking setup, but controlled it with either an Android smart phone or a PC over a Bluetooth connection. The PC interface was fairly simple to implement, but the Android was not.
by elf
Thu Jul 18, 2019 10:34 pm
Forum: Equipment Discussions
Topic: TMC5130A-TA BOB & ARDUINO UNO
Replies: 49
Views: 17238

I'd recommend a 32bit microprocessor like the Teensy 3.2 or 3.5. They are Arduino compatible, have many more pins, and are quite a bit faster than an Uno.

A touchscreen like a Nextion is a lot more versatile than an lcd and buttons.
by elf
Thu Jun 13, 2019 4:19 pm
Forum: Equipment Discussions
Topic: Automated XYZR Stage, The R Component
Replies: 25
Views: 5015

Automate this :lol: :lol:
by elf
Thu Apr 25, 2019 9:18 pm
Forum: Equipment Discussions
Topic: Granite Surface Plate
Replies: 131
Views: 24161

These slides made to fit 2020 extrusions may be something to investigate.
by elf
Wed Apr 24, 2019 1:02 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Teagueia zeus orchid, simple manual stack-and-stitch
Replies: 21
Views: 7934

Can you show more of the water setup?
by elf
Mon Apr 22, 2019 10:08 am
Forum: Equipment Discussions
Topic: Granite Surface Plate
Replies: 131
Views: 24161

You can attach mgn12 and mgn15 linear slides directly to aluminum extrusions. I made a full length tnut substitute from a strip of 1/8"x1/2" aluminum bar by drilling and tapping holes.

As far as I know, there are no ball bearing carriages which will run directly on aluminum extrusions.
by elf
Sun Apr 21, 2019 11:55 pm
Forum: Equipment Discussions
Topic: Granite Surface Plate
Replies: 131
Views: 24161

I did have a couple of questions for anybody with experience with the Misumi/80/20 profiles and accessories: Is there a roller bearing (like this: https://8020.net/pub/media/catalog/product/cache/image/700x560/e9c3970ab036de70892d86c6d221abfe/4/0/40-6824_photo.png ) that will work on this type of p...
by elf
Thu Apr 18, 2019 12:42 am
Forum: Equipment Discussions
Topic: Granite Surface Plate
Replies: 131
Views: 24161

I used a 12"x18"x3" granite surface plate for my desktop setup. I used a hand drill and masonry bit to drill through holes. It wasn't hard to do, but did take a long time. I bolted the aluminum extrusions from the bottom using long bolts, washers, and tnuts. There are several online metal suppliers ...
by elf
Wed Apr 17, 2019 10:27 am
Forum: Equipment Discussions
Topic: Granite Surface Plate
Replies: 131
Views: 24161

Cover the granite with a steel plate, 18 gauge or thicker. This allows you to use magnets to position lights, diffusers, etc. Granite can be drilled with masonry drills. It's best to do it outside and use running water to keep the dust down. The dust can cause silicosis, a serious disease. You can e...
by elf
Mon Jan 14, 2019 1:53 am
Forum: Equipment Discussions
Topic: pulley with 60 or 100 teeth and bore 4mm for the THK KR2001
Replies: 12
Views: 6241

If the stepper driver/controller can enable and disable the stepper, then using a handwheel works fine. The stepper will generate voltage when driven manually, so the controller may need protection. Here's a screenshot showing stepper and pulley on the Z axis of my rose engine. The handle on the lar...
by elf
Wed Jan 09, 2019 11:52 am
Forum: Equipment Discussions
Topic: pulley with 60 or 100 teeth and bore 4mm for the THK KR2001
Replies: 12
Views: 6241

A bushing would probably be your best bet. This steel pipe (DOM) from Misumi should work.

This 60t pulley has a 6mm bore.
by elf
Tue Jan 08, 2019 2:19 pm
Forum: Equipment Discussions
Topic: pulley with 60 or 100 teeth and bore 4mm for the THK KR2001
Replies: 12
Views: 6241

There are no GT3 pulleys. There are GT2 and GT3 belts. Each of these are available in 2mm, 3mm, 5mm, 8mm pitch. Unfortunately most ebay, aliexpress, 3d print shops, etc. call GT2 - 2mm only GT2. I have 3d printed GT2-3mm pulleys as well as CNC machined them. I don't think my 3d printer would make ac...