That Machinist

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That Machinist

That Machinist

@SynchroMaker

CAD/CAM, product design, manufacturing, science addict, American human accelerationist.

Beigetreten Aralık 2025
82 Folgt49 Follower
That Machinist
That Machinist@SynchroMaker·
>from croatia/italy using a small sf office to be “american” >makes “reindustrialize america” sweater >”cant find domestic production” >takes american money >gives it to a 3rd world cesspool >”helping” somehow >inevitable foreign crashout “we were trying to help by not doing anything that helps except taking american dollars and converting to 3rd world money”
Skill Issue - clothes for technologists@skillissuesf

I'm sure X will be thrilled to hear that we're going to shut our brand. Yes, we made a mistake in launching a Reindustrialize sweater that was made in Portugal, but we truly did look for 3 months for a factory in the US that would make it at 50 MOQ and couldn't find one. Our plan was to launch it and see if there was enough demand for it to justify a larger MOQ. Also, we thought that in the process of doing this, there was a good chance we'd unsurface a factory that could do it. (Which we did. It seems the only factory in the US that can do this has a website that says they're a fabric company.) Our brand was about a love for technologists and wanting to make them look better. All the nastiness of the past week destroyed that for us. Tech bros are clearly not supportive of anyone else but other tech bros in building start-ups. Instead of a positive, constructive, builder-supportive, "Hey, here's a US factory that can make your next run," we were subject to a slew of abuse. I lost my life savings doing this, which should make everyone happy. (Yes, I'm Croatian.) I need to go get a job now. We have piles of inventory: all the next planned drops of clothes we made to honor tech culture that we're now just going to give away. Doing a thread of the clothes now. DM us your size and address if you want something, but please say something kind. We don't want to contribute any more negativity to the world.

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That Machinist
That Machinist@SynchroMaker·
>from croatia/italy using a small sf office to be “american” >makes “reindustrialize america” sweater >”cant find domestic production” >takes american money >gives it to a 3rd world cesspool >”helping” somehow >inevitable foreign crashout “we were trying to help by not doing anything that helps except taking american dollars and converting to 3rd world money”
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Skill Issue - clothes for technologists
I'm sure X will be thrilled to hear that we're going to shut our brand. Yes, we made a mistake in launching a Reindustrialize sweater that was made in Portugal, but we truly did look for 3 months for a factory in the US that would make it at 50 MOQ and couldn't find one. Our plan was to launch it and see if there was enough demand for it to justify a larger MOQ. Also, we thought that in the process of doing this, there was a good chance we'd unsurface a factory that could do it. (Which we did. It seems the only factory in the US that can do this has a website that says they're a fabric company.) Our brand was about a love for technologists and wanting to make them look better. All the nastiness of the past week destroyed that for us. Tech bros are clearly not supportive of anyone else but other tech bros in building start-ups. Instead of a positive, constructive, builder-supportive, "Hey, here's a US factory that can make your next run," we were subject to a slew of abuse. I lost my life savings doing this, which should make everyone happy. (Yes, I'm Croatian.) I need to go get a job now. We have piles of inventory: all the next planned drops of clothes we made to honor tech culture that we're now just going to give away. Doing a thread of the clothes now. DM us your size and address if you want something, but please say something kind. We don't want to contribute any more negativity to the world.
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That Machinist
That Machinist@SynchroMaker·
I’ve used a few. They’re really cool! We mostly use them for gear keyways, square through-holes, super delicate sheet parts, cutting hardened material, and some custom carbide form tools. Generally i really liked running 0.012” zinc coated wire for speed and reliability, but did jump down to 0.002” for a few use cases. Every wire size usually requires its own diamond/ceramic dies ($$$$)
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EV_Trapper
EV_Trapper@EV_Trapper·
Does anybody use WIRE EDM to flush cut their parts before doing operations or other parts? I need a really high precision & repeatable method to do that on ALL KINDS of parts. Would love to know!
EV_Trapper tweet mediaEV_Trapper tweet mediaEV_Trapper tweet mediaEV_Trapper tweet media
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That Machinist
That Machinist@SynchroMaker·
Who are best knife makers on X to follow? Especially American made
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That Machinist
That Machinist@SynchroMaker·
It’s a combination effect at best. My understanding is based on both “no surface is perfect” and “everything is rubber”. With the two tapers and shank bore there’s inevitably a slight taper, runout, and concentricity variance on all surfaces. Might be 0.002” all the way down to microns. There’s also super small deformation and deflection of the spindle/collet taper, the collet itself, and the nut. With all that you then arrive at an overall system that allows some shifting under clamped loads.
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Elizabeth Greene
Elizabeth Greene@GreeneElizabeth·
@SynchroMaker @willreil I've seen the tap-tap trick on big CNCs, but don't really understand why it works. Is it shifting the collet in the bore taper?
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Will
Will@willreil·
I got 100 PCB drill bits for $10. I have no clue how they make them for so cheap. Got a couple 30 degree v bits too!
Will tweet media
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That Machinist
That Machinist@SynchroMaker·
Runout is indeed a killer for tiny bits! Ideally you want less than 1% diameter runout in general conditions. If the machine cuts well, dont sweat it’s, but its worth a check with a test/dial indicator. Depending on your collet setup, you can usually get the bit censtered by using a small hammer and a piece of aluminum or brass to tap on the shank near the collet. Just very gentle taps to tweak any little play there may be in the collet setup.
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Will
Will@willreil·
@GreeneElizabeth Ah thank you, yeah I'm sure this will be a problem on my CNC. I don't think the guy used it too much before but still. Any way to correct this?
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That Machinist
That Machinist@SynchroMaker·
@davidliuxyz There’s 0% chance im downloading someones gcode and putting it in my machine, too much liability and unknown. Unless it’s short macros, which claude can write anyways
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David Liu
David Liu@davidliuxyz·
there should be a github for g-code, i mean g is in the name
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That Machinist
That Machinist@SynchroMaker·
My most common business model is taking something companies couldn’t get made for varying reasons, developing a process and “product”, then selling it off to them to build in-house or from another 3rd party. Typically any competent customer can reverse engineer your work by looking at it anyways, but those that can’t make great customers while they get rolling. I really like providing a full package in a professional binder with digital media on physical storage as well. Open binder, read it, pull the media and data, setup their machines, and they’re making parts! I’ve had a few phone calls summarized as “hey you were too expensive so we went to this other guy but he’s struggling, how’d you make it so we can tell him how to do it?”. They go on my high-quote list and rarely get answers. I summarize with “my experience, knowledge, years of data, machines, cad/cam, etc can be for sale but its not free”. Ive gone with both a lump-sum, as well as per-piece, and as you can imagine they try to screw you on the per-piece commission.
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James Hartman
James Hartman@jrhartman131·
A not-so-hypothetical hypothetical: A customer decides that they are going to start doing the work you do for them in house. They start asking questions about mfg process, materials used, etc. Maybe they’ll buy the material from you, maybe it doesn’t work out and they decide to not do it in house later on… Do you provide them with information and answers or say good luck?
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That Machinist
That Machinist@SynchroMaker·
@RegZeller Put em on a machine for a while, let them feel and see it. Experience matters, even if it’s short
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Reg Zeller
Reg Zeller@RegZeller·
For my machine shop friends, how do you go about training new people to quote CNC machining? Especially those that haven’t had much (if any) experience actually machining? Is it possible? Are there programs to purchase that are better than the ones I looked at 5-7 years ago? I was taught how to quote, but I’m arguably novice at best and it’s been a hot minute since doing it day to day.
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That Machinist
That Machinist@SynchroMaker·
So whats the going rate on used carbide? I have three 5 gallon buckets full and no idea what to even do with it.
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That Machinist
That Machinist@SynchroMaker·
@averagemachiner @gak_pdx Ask your rep for a 5 gallon pail of 250c concentrate next time you order. It blew both of those out of the water for me, never looked back. The 795 always left a film on the machines. The blaser we tried stripped the paint off a brand new vf2ss in 5 months
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Tim Mcnellon 🇺🇸
Tim Mcnellon 🇺🇸@averagemachiner·
@SynchroMaker @gak_pdx I like 795-b, it was actually pretty decent in my 6 years working with it. Using blaster synergy 735 now at a different and it’s ok, has a stronger smell/taste.
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Greg Koenig
Greg Koenig@gak_pdx·
Never use fully synthetic coolant. For the love of the machining gods, I’ve seen 4 month old machines that look like a decade of hard service because: synthetic coolant. Don’t know why anyone even bothers selling it. Synthetic has two big drawbacks: 1- It strips lubricant off of everything in the machine. Every seal goes dry, every greased area gets washed out, every mechanism goes crusty. Your tool setter gets rickety, your way wipers crack. 2- it deposits this tacky talc on everything. This eats paint, and generally makes everything in the machine suck to work on. Your workholding needs constant cleaning, your ball screws and linear guides need extra PMs. On those 4 month old machines, we had a complete spindle failure… what happened? They used through spindle coolant, and that tacky film built up in the Deublin rotary union’s carbide:carbide seal. This seal actually seals under pressure, and opens a bit when under no pressure (the fluid acts to keep it cool, so when the spindle runs without coolant, this design keeps it from burning up at 20k RPM). Remaining synthetic coolant dried across these faces, and prevented them from closing fully- every time the TSC was turned on, a tiny dribble of coolant leaked from the union. This worked down the shaft, infiltrated the spindle when the machine was powered down (Brother uses positive pressure on the spindle casting to prevent contamination). Well under 2 oz of this synthetic coolant washed all the Kluber grease from the upper spindle bearing, leading to spindle death with <100 hours of production. Sad! Synthetic coolant is the devil! (And I had to personally deny the warranty claim, and that sucked. We warned them about the evils of synthetic coolant at install, they fully understood the issues and the warranty does not cover damage caused by full synthetic coolant. Even warned them *this* can happen… but their FDA facility documentation and cleaning process was based on this coolant, selected 12+ years ago. They had no choice.)
Mikameel ᯅ@augmentedcamel

When to replace the coolant fluid of your cnc machine? Next demo is an actual procedure.

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That Machinist
That Machinist@SynchroMaker·
@zodiaceng 250c really is the best. Once you try it, it really makes you wonder what the other coolants are even doing or are made of 😂
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Ken Spaulding
Ken Spaulding@zodiaceng·
🔊 🔊 🔊 For some reason people still like to put this trash in their machines because YouTube said so. Do not use full synthetic coolant. Just buy Qualichem 250c and never have a problem with your coolant ever again.
Greg Koenig@gak_pdx

Never use fully synthetic coolant. For the love of the machining gods, I’ve seen 4 month old machines that look like a decade of hard service because: synthetic coolant. Don’t know why anyone even bothers selling it. Synthetic has two big drawbacks: 1- It strips lubricant off of everything in the machine. Every seal goes dry, every greased area gets washed out, every mechanism goes crusty. Your tool setter gets rickety, your way wipers crack. 2- it deposits this tacky talc on everything. This eats paint, and generally makes everything in the machine suck to work on. Your workholding needs constant cleaning, your ball screws and linear guides need extra PMs. On those 4 month old machines, we had a complete spindle failure… what happened? They used through spindle coolant, and that tacky film built up in the Deublin rotary union’s carbide:carbide seal. This seal actually seals under pressure, and opens a bit when under no pressure (the fluid acts to keep it cool, so when the spindle runs without coolant, this design keeps it from burning up at 20k RPM). Remaining synthetic coolant dried across these faces, and prevented them from closing fully- every time the TSC was turned on, a tiny dribble of coolant leaked from the union. This worked down the shaft, infiltrated the spindle when the machine was powered down (Brother uses positive pressure on the spindle casting to prevent contamination). Well under 2 oz of this synthetic coolant washed all the Kluber grease from the upper spindle bearing, leading to spindle death with <100 hours of production. Sad! Synthetic coolant is the devil! (And I had to personally deny the warranty claim, and that sucked. We warned them about the evils of synthetic coolant at install, they fully understood the issues and the warranty does not cover damage caused by full synthetic coolant. Even warned them *this* can happen… but their FDA facility documentation and cleaning process was based on this coolant, selected 12+ years ago. They had no choice.)

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Eric Vallieres
Eric Vallieres@EricVallieres84·
When you don’t trust the operator to remove the dowel locating pins (I’m the operator)
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KC
KC@amphichrome_·
when I tell car people I’m into rotaries they always say something shit like “you must hate yourself, your car is going to be broken all the time”
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kache
kache@yacineMTB·
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That Machinist
That Machinist@SynchroMaker·
@danfiru @faraz_r_khan Talk to it like you’re describing the part over the phone with your eyes closed and it’s pretty impressive. It’s the worst it’ll ever be, right now. Feels like a fresh intern just hired on hourly rate.
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Faraz Khan
Faraz Khan@faraz_r_khan·
Solidworks - one of the most popular cad software sucks so bad that the advice from experienced mech-es is to simply use as little parametric modeling / references as possible otherwise “bad things will happen”. Crazy you all deal with this daily 😅
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Russell Winter
Russell Winter@MFG_SMB·
Manufacturing Twitter Role Call It’s time again, been posting this every 3 months since September 2025 If you want a feed full of manufacturing go though and connect with all the profiles that responded over the past 9 months Add yourself -> post what you do in < 5 words
Russell Winter@MFG_SMB

Manufacturing Twitter Role Call If you want more manufacturing, industrial policy, and reindustrialization on your feed, like I do Let’s build this list I try to only follow people who interact with these related posts but only found like 500 of them...

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That Machinist
That Machinist@SynchroMaker·
@danfiru @faraz_r_khan They now have agent modeling built into Fusion. Been playing with it for a few days, it’s pretty solid.
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danfiru
danfiru@danfiru·
@faraz_r_khan every CAD tool sucks. "use less parametric modeling" is admitting the tool is broken. nobody has built agent-native CAD yet. open field. someone go.
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