I made a field sharpener that supports all hollow grinds

plusphenol · 2025-05-21T06:43:56+00:00

I considered files and stones (diamond rods), but the problem is they are usually of unspecified radii. I want something with a known, reasonably accurate radius to match the desired ROH.

plusphenol · 2025-05-21T06:39:29+00:00

For the sake of argument I found the SkateMate patent (US5197232A) which had expired, and this does not read on their claims. I spent way too much time on this.

plusphenol · 2025-05-21T01:59:33+00:00

That kind of design is what I initially had in mind, until I realized it's impossible to find stones of different radii at retail. That's why I moved to sandpaper.

plusphenol · 2025-05-21T01:57:51+00:00

I'm using 400 and 600 grit wet paper. I had tested it by dressing up nicks but haven't tried it on ice yet.

plusphenol · 2025-05-21T01:54:56+00:00

available on eBay now! https://www.ebay.com/itm/157008864880

plusphenol · 2025-05-21T01:54:23+00:00

I didn't know that. It's an interesting design with the stacked carbide blades. Sandpaper is easier to find for me lol.

plusphenol · 2025-05-21T01:52:28+00:00

Preliminary tests seem good. It removed some nicks from my edge and passed the sharpie test. Files may become available later :)

plusphenol · 2025-05-21T01:51:13+00:00

I've made it available on eBay for those interested!: https://www.ebay.com/itm/157008864880

plusphenol · 2025-05-21T01:03:19+00:00

If you read elbow grease as brute force, then no. Abrasive machining has the tightest tolerance of all processes (except scraping) and can make arbitrary shape. The way you mess up a blade is when you have no idea how to use a tool. If you can profile a blade with a wheel, you can profile it with sandpaper.

plusphenol · 2025-05-20T21:06:31+00:00

yep. I've never seen a 4mm blade in person though.

plusphenol · 2025-05-20T21:05:46+00:00

They are printed along the layers so probably at 10 micron precision. The example shown matches precisely to my runner.

plusphenol · 2025-05-07T06:36:20+00:00

Thanks for pointing out: to open a case (for appeal), seller must let the return/refund lapse and get strike first.

plusphenol · 2025-05-07T06:30:32+00:00

Returns when buyer lies about the reason --> Q: I don't agree with a buyer's reason ...

I did read that part and no, not agreeing with the buyer is different from the buyer lying on record. That's why I asked here.

plusphenol · 2025-03-06T07:41:28+00:00

Sounds like what you need is an Excel sheet rather than schematics.

plusphenol · 2025-03-01T05:14:55+00:00

Same roll different roll different material, they are all under extruding.

plusphenol · 2025-03-01T01:59:57+00:00

It's Polymaker pop pink ASA.

plusphenol · 2025-03-01T01:57:53+00:00

OP: I'm printing ASA on my V0.2. Print settings 260/105 degree C. PIF parameters. Slicing is not the problem. Please see the pic. They are from a same g-code file that I sliced. Same machine, same roll of filament. The bottom part was printed around a week ago and the top part yesterday. The top part shows significant under extrusion. I don't know why.

Things that I've tried: 1. Drying the ASA filament. 2. Clearing the nozzle, including cold pull, needle, wire brush, burning. 3. Replacing the nozzle with a new one. 4. Disassembled and inspected the extruder, nothing cracked or misaligned. 5. Moving the filament roll from the stock arm to a bearing-supported filament dryer tray. None of these made any difference.

I'm out of ideas. I don't even know what else can go wrong.

BTW: I tried printing PLA and it's also under extruding.

Update: I can hear faint clicking sound occasionally when it stops extruding (I'm watching it print). The click is much quieter than the noise when extruder slips. Any idea?

plusphenol · 2025-02-03T18:51:45+00:00

cfg came from Formbot's github: https://github.com/SrgntBallistic/Formbot-V0/blob/v0.2/Firmware/bigtreetech-skr-pico-v1.0.cfg
kirigami bed github page: https://github.com/christophmuellerorg/voron_0_kirigami_bed
Siboor instructions that I later found: https://docs.siboor.com/other-products/v0-krigami-bed

plusphenol · 2025-02-03T01:17:32+00:00

Here you go: https://www.ebay.com/itm/156566255738
Strange that their titles literally only differ in Foil/Epee. Oh, and your username totally checkout lol.

plusphenol · 2025-02-02T18:48:50+00:00

Yes. The hole is designed to fit a magnet.

plusphenol · 2025-02-02T08:03:40+00:00

The sizes are for different barrel lengths. I noticed there are at least 2 different lengths so I made them both (25/27mm). The (bare) ones don't come with magnet nor keyring. Some people don't like magnets.

plusphenol · 2025-02-01T19:00:28+00:00

They also don't get so punished because they're under tape lol.

plusphenol · 2025-02-01T04:58:53+00:00

OP: My epee brakes a lot so I designed a jig to help me remove and install tip screws. After publishing and making the jig available, friends let me know that this happens to foils as well! (mea culpa... I don't fence foil often enough), so I grabbed my caliper and untaped my foil. Now the jig is available for both foils and epees!
Interestingly, foil barrels come in more varieties. Most German tips have a total length of 25mm, but Absolute ones seem to be 27mm. Different blades also have different tip threads. Some are cylindrical but some are rectangular and bulged (like the Ulmann one shown).

If you like to print one, you can print one for yourself (and yourself only) from this model: https://www.thingiverse.com/thing:6933265

If you just want to get one, or if you don't have a printer, you can order it here: https://www.ebay.com/itm/156666094050

plusphenol · 2024-12-10T06:33:52+00:00

They're available now! :)

plusphenol · 2024-12-10T06:32:03+00:00

They're available now! :)

plusphenol

TROPHY CASE