Member postings for jimmy b

I treat myself to a new copy every 4 years, usually selling the old one for not much less than the cost of a new one.

I also have 30 edition pdf, which can be found online without too much difficulty

Jimb

I just hot glued the lids in place after dropping them a couple of times, not had an issue since!

Jimb

In my experience, bigger nozzle, thicker walls and increased layer height gives very strop prints.

I've had very strong prints (brackets mainly) using 0.8mm nozzle, 0.5 layer height and 4.8mm walls.

You can further improve the strength with cubic infill, little point going over 40% in my experience.

Good luck.

Jimb

I'm really impressed with the print quality. The high speed really needs Creality "Hyper pla" to be successful, I had 4 rolls come yesterday as the results are worth it.

The build quality and Creality slicer are better than I expected.

Overall very happy.

Jimb

Having used the Creality slicer for a week, I have to say its very very close to Cura.

Having spent years with Cura, I did just want to carry on with it, right now, I'm not missing it!

Jim

I knew before I ordered that there would be an issue with Cura, having read up on the;'net, but the Creality software did have a slicer for the K1, which was the reason why I ordered.

I had given the new Pursa MK4 some serious thought, but on balance went with the K1 as a core xy printer.

Mrs Jimb did say this afternoon that it's much quieter than she thought, It must have helped showing her youtube clips at maximum volume..........

Jimb

Ron,

Sadly not the case! I was disappointed at this, having used Cura for years.

There is a massive amount of start code, I was going to create my own Cura profile, but having had an afternoon playing around with the Creality slicer, it's much better than first appearance, so I will stick with it for now.

Done a couple more prints and I'm blown away by the quality of finish, it's better than both of my, much molded, Aldi printers and my Creality CR10 MAX ones I use at work and that is running 6 times faster on the same filament.

The Hyper PLA is good for 12x speed with the same quality.

Jimb

My new Creality K1 arrived yesterday, been waiting a few months as it was a pre-order.

On the 600mm/s printing is unbelievable! Really impressive quality even at that speed. Not as noisy as I (or Mrs Jim) feared....

Only drawback is having to use the Creality slicer.

Jimb

I change oil and filter on both my cars every year, even though the mileage is less than "recommended". My motorcycles always had a maximum of 6 months or half the "recommended" mileage for oil and filter change.

My theory being that oil is cheaper than engines...

Had a mate that used to boast about his Ford Sierra doing 40,000 miles with out an oil change, saying it was all a con. At 50,000 miles the engine was shagged....

Jim

Edited By jimmy b on 14/07/2023 04:12:47

I've broached 8mm hex in 303 stainless, it took a lot of pressure, so much it took out the bearings in the tool after 20 parts.

Jim

What speed are you running?

Jim

Edited By jimmy b on 04/07/2023 17:37:01

I milled a hex on the shaft and 3D printed a handle.

Works well.

Jim

Fulmer you are a vile person.

Blocked.

Jimb

I'd be inclined to change the belt and have the sump off on the "new" engine, just to be sure it's ok

Jim

Looking good Matt!

Jim

Matt,

Looking forward to seeing progress on your workshop.

One of my old workshops was a bit smaller than yours, Bisley drawer units are a great way of storing a lot of tools in a small place.

Best of luck!

Jim

I favour the usual straight ones.

I've got quite a pile (in excess of 300!)of slip gauges that have failed calibration for precision use.

Jim

Where is the noise coming from?

I changed my noisy fans for silent ones, big improvement.

I've also put TL smoothers on the stepper motors.

The printers sit on 1" thick granite pieces, isolated from the table they sit on by rubber pads. This does stop a lot resonance.

Jim

HI Neil,

I made one of the Hemmingway rotary broaching tools a few years ago, not used it too much, but have successfully broached 8mm hex's in 30 off stainless steel fittings (304 grade). It did take a lot of force, enough to knacker the bearings, so i would be very wary of external broaching given the surface areas involved.

Jim

I've got a 4 jaw self centring chuck, only every used on square bar.

My regular 4 jaw only gets used for "odd" shaped parts.

99% of the time I use a 3 jaw chuck, with either hard or soft jaws.

I also have an ER40 collet chuck that gets used on production work.

As a skilled engineer with 40 years experience on both manual and CNC lathes, I have never really understood most of the arguments for 4 jaw chucks...........

Jim