Nifty CNC Machining

Nifty CNC Machining custom parts design and manufacture using a Hitachi Seiki CNC HiCell CA20 turn/mill Lathe with full conversational control of all 4 axis XYZC

custom parts design and manufacture using a Hitachi Seiki CNC HiCell CA20 Lathe with 4 axis XYZC

This is typically how most medical components land on my work bench…..in multiple pieces. This one off job is some sort ...
13/11/2025

This is typically how most medical components land on my work bench…..in multiple pieces. This one off job is some sort of surgical instrument that has this plastic gearbox labyrinth that connects it all together. It has cover plates, bearing portals, axle location, mounting flanges, etc. all in one very compact yet fragile part. I copied it as best I could from the damaged unit. Machined from black acetal. The interesting part is that none of this job was done using the machine’s own conversational programming system, nor was any cad/cam system. The Hicell does have very limited conversational capability but not pocket milling. That wasn’t even thought of in 1993, so I find it easing to write the code by hand. I did it the fastest way I know, the old way. Pen, paper, vernier, calculator and AI……That’s ACTUAL INTELLIGENCE, not that new fangled bu****it algorithm software disguised as something it is not. The entire code was hand typed in my old text editor using MS-DOS 6.2, old trusty never fails me. No updates, no bugs, no glitches, no waiting to load, no log ins. It just works simply, as it should. CNC G code is very simple if you know what you want to do, it only gets complicated if you let it. The only modern part of this process is using a PC instead of blue punch tape (shudder), I do not miss that life, one mistake with my fat digit typing single characters and you start the entire program again. This job worked out well and will get the customer out of trouble and back in surgery faster than they expected.

13/11/2025

This is typically how most medical components land on my work bench…..in multiple pieces. This one off job is some sort of surgical instrument that has this plastic gearbox labyrinth that connects it all together. It has cover plates, bearing portals, axle location, mounting flanges, etc. all in one very compact yet fragile part. I copied it as best I could from the damaged unit. Machined from black acetal. The interesting part is that none of this job was done using the machine’s own conversational programming system, nor was any cad/cam system. The Hicell does have very limited conversational capability but not pocket milling. That wasn’t even thought of in 1993, so I find it easing to write the code by hand. I did it the fastest way I know, the old way. Pen, paper, vernier, calculator and AI……That’s ACTUAL INTELLIGENCE, not that new fangled bu****it algorithm software disguised as something it is not. The entire code was hand typed in my old text editor using MS-DOS 6.2, old trusty never fails me. No updates, no bugs, no glitches, no waiting to load, no log ins. It just works simply, as it should. CNC G code is very simple if you know what you want to do, it only gets complicated if you let it. The only modern part of this process is using a PC instead of blue punch tape (shudder), I do not miss that life, one mistake with my fat digit typing single characters with one finger and you start the entire program again. This job worked out well and will get the customer out of trouble and back in surgery faster than they expected.

07/11/2025

Survey time…bosses / managers / directors of companies….we’ve all had them. Mostly they are beyond useless when it comes to real work. Not much help on the actual workshop floor at all, if ever. These days, they generally are brilliant at polishing a chair or preventing it from blowing away. My 1st boss was different. Once his office duties were complete, he’d flick his tie (yes, tie) over his shoulder and debur or drill holes on a very old pedestal drill. He’d even help clean, sort, count and pack jobs. You know, the menial tasks, but those that actually help in the production process.

So, who still does this? Does anyone’s boss help on the workshop floor? Do they get their hands dirty?

Well, today I was pleasantly surprised. The Nifty CNC Machining company director impressed me. I arrived home to find my workload all caught up to date. Not only had the director deburred every single brass spacer, but also sorted the swarf, washed them all and laid them out to dry ready for counting and packing. WOW! The only thing left to do, was run the last few brass bars and wash the machine down. This saved me many hours of catchup time. More beer time as well.

The real kicker is…for those that don’t know, the Nifty CNC Machining company director is my beautiful wife Nerissa. She has earnt her keep this week. I may just keep her on a little longer.

Another small repeat job completed. These are machined from black acetal. They are a shroud for medical grade tweezers u...
04/11/2025

Another small repeat job completed. These are machined from black acetal. They are a shroud for medical grade tweezers used in surgery. The 2 small offset holes in the blind end are for the probes to protrude.

CS1030 mild steel alignment pins for an engine crank. OD = 17.0mm, Length = 100mm / 130mm with 50mm / 80mm of 7/16" x 20...
04/11/2025

CS1030 mild steel alignment pins for an engine crank. OD = 17.0mm, Length = 100mm / 130mm with 50mm / 80mm of 7/16" x 20UNF male thread section.

I've not had time to post recent jobs, plus some are R&D, so can't be made public just yet. Anyways, a few smaller jobs ...
04/11/2025

I've not had time to post recent jobs, plus some are R&D, so can't be made public just yet.

Anyways, a few smaller jobs squeezed in between the bigger ones.....these spacers machined from K1045 mild steel were forgotten by the customer which meant this heavy roller shaft fell out thus teaching the operator to dance rather quickly.

The end of another repeat job. I have done these a few times now. These  #316 stainless steel wire rope swaging ends for...
25/10/2025

The end of another repeat job. I have done these a few times now. These #316 stainless steel wire rope swaging ends for braided cabling are a time consuming component. Fairly easy on the tooling because I don't push it too hard. Just let the machine tick away doing its thing.

All 4 separate operations to complete what looks like a simple enough job are now done. The turning is fairly quick, it's the drilling, reaming and V groove profiling that takes time.

1st op, cut the blanks. 2nd op, part machine the section for swaging. This has multiple 0.5mm pitch V concentric grooved sections are for the swaging tool, machined by plunging a threading profile insert. All 60 off individual groove profiles. The hole is reamed to take the multi stranded stainless steel wire rope Dia. 8.3mm x 80mm deep. This op alone took a couple of days run time. Each job is handled individually, no bar feeding this one. 3rd op, finish the plain shank section. 4th op, profile the head.

Some machinists generate a program and run it as is. I never have. I edit the life out of it to get the best results and cycle time. Every time I repeat a job, I examine the program code for ways to improve it. Only a couple of guys I used to work with ever bothered with this. I remember a spool program that Mike Kersey and I played with over many years. It barely resembled the original. What a mess that was. I don't miss it. That's how we manage to do jobs better and faster than the next guy. Always thinking and evolving.

Another one complete and ready for delivery.  #316 stainless steel concrete anchors, drilled and tapped M16 x 2.0p x 45m...
19/10/2025

Another one complete and ready for delivery. #316 stainless steel concrete anchors, drilled and tapped M16 x 2.0p x 45mm deep. Stainless steel is hard on tooling and very time consuming.

Rinse & repeat….this is what CNC machines were designed and built for. Small batch work, repeated often enough to warran...
18/10/2025

Rinse & repeat….this is what CNC machines were designed and built for. Small batch work, repeated often enough to warrant. Non machinists will assume they are fast, wrong. They are repeatable, that’s it. As an apprentice I was trained to set and operate automatic capstan machines, cam type, plug board and dial versions, including manually operated machines. These can out perform any CNC machine any day of the week…once setup. That’s the killer, the setup can take weeks to get correct, including oxy cutting, grinding cam profiles to set trip dogs, speeds, feeds, rapids & feed positioning. I DO NOT MISS THESE AT ALL.

Repeat programs for a CNC machine are stored on a computer and can be transferred back to the CNC machine in seconds, tools added, q-set and you’re up & running in minutes, if the job is not complex.

Polypropylene. Not the best plastic to machine, but definitely not the worst. Stringy crap that wraps around the job, tooling, turret and anything it gets near. Often this causes friction on the job which just melts it. These are sample adaptors that reside in a larger canister. The thread is a stub acme profile 3.5mm pitch to suit the cap supplied. They are a sample "jar" for use in medical laboratory experiments. The thin wall section made it a challenge to hold them in a hydraulic chuck without distortion. The tolerance is 0.05mm. Bore diameter, depth and finish are critical. Another repeat job done.

Where do you get bobcat spare  parts at 4pm on a Friday arvo?I have no idea. It's faster and cheaper to machine them. Di...
10/10/2025

Where do you get bobcat spare parts at 4pm on a Friday arvo?
I have no idea. It's faster and cheaper to machine them. Dia. 25.50mm x 18.30mm wide with a 3/8" x 16UNC tapped hole for a gear lever. Machined from #4140 high tensile steel.

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Bullsbrook
Perth, WA
6084

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+61407087816

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