Here is a list of all the postings Alan Wood 4 has made in our forums. Click on a thread name to jump to the thread.
|Thread: New EBay payment regime|
I am currently suffering my first payment from EBay relating to a sale.
Assuming you have signed up to the new system, EBay now credit your bank account directly with the funds due from a sale rather than it being instantly passed to your PayPal account as a credit.
Clearly this means that anyone trading on EBay can no longer keep their profits or losses 'air side' in the PayPal account where it would have been away from their auditors prying eyes.
EBay have had my monies sat in their bank account for 2 days so far. I am waiting for the message that they are having teething problems with the new system and it has nothing to do with the interest received from sitting on the funds.
Anyone else being similarly shafted ?
|Thread: Help wanted, How can I use a stepper motor as a table feed.|
I fitted steppers to my Myford VMB mill just to give me motorised adjustable drive. It is over the top for what you need with just one axis but the circuitry would simplify dramatically. I could run a CNC milled board if it is of interest.
|Thread: Details of modifications to the Burgess BK3 Bandsaw|
It was bugging me also as the upper guide had made such a difference to the machine.
You will find all the drawings in the ZIP file.
Following interest from a number of owners I have created a ZIP file of all the modifications I have made to my Burgess BK3 bandsaw together with links to other web resources. The link is at the foot of this latest post.
|Thread: Is a CNC the right solution for me?|
I received a mailshot about two new CNC milling machines from Chinese company Titan Machinery that are aimed at the small workshop. They don't appear on their website but the specification of the larger one looks quite nice with 8k spindle, AC servos, linear rails and 8 port tool changer. I guess this is similar to the Syil family ? I have no affiliation to them, who they are etc but thought it sufficiently of interest to post details here.
|Thread: Burgess Bandsaw upgrade|
Since the above message I have had a number of PMs requesting more info on the BK3
|Thread: Should I scrap this reel of filament?|
I would echo the comment that despite being a new reel the filament might have a high moisture content and needs drying out. I always soak heat a new reel before using. 36 to 38 degrees for PLA/ABS /PETG for 5 hours.
|Thread: Burgess Bandsaw upgrade|
I have sent you message and a link to my blog regarding the various work I have done on the BK3 including the notes you mention above. I have also replaced the drive wheel for both the motor drive and the main wheel.
The next best thing to buying from McMaster-Carr is having free access to all their parts as 3D model downloads in Fusion 360.
|Thread: Antikythera Mechanism : New-ish findings|
If I am not mistaken Chris at Clickspring was a co-author. There is a reference in the Acknowledgements by CB to his Patreon patrons.
|Thread: Air compressor query|
I would echo Anthony's recommendation. I have the Bambi PT50 which looks like a badged version of the Hyundai 50L. It has a 65% duty cycle and can cope with my Fogbuster mist coolant system.
Edited By Alan Wood 4 on 26/02/2021 09:56:36
|Thread: Mist Coolant (Fogbuster)|
As a variation of Clive's mounting technique, I modelled in Fusion 360 a 3D printed version of a standard Myford QCTP tool holder to mount the Fogbuster nozzle. The nozzle itself has been modified per Clough42's idea to feed the air and lubricant via 1/2" LocLine. The front position on the QCTP works well in driving the air jet to the back of the lathe. The QCTP fixture also means the nozzle can be quickly removed when working non lubricant materials. If undertaking a boring operation the head is rotated to its normal position and the Fogbuster mount is fitted to the side slot.
Consideration needs to be given to the air supply capacity when running a Fogbuster. I have a Bambi PT50 'silent' compressor that has a 65% duty cycle and gets very warm on a long machine run at 10psi. The air supply feeds the Fogbuster fluid reservoir and onward to twin Fogbuster nozzles.
The nice thing about a misting installation is that you have the choice to just run air or air with coolant unlike flood coolant where it is all or nothing (and messy).
I use XtremeCut 250C in my FogBuster on my Tormach 440 and my Myford lathe. It seems popular with many of the YouTube machinists. UK sales are from Lubriserv near Bristol, just up the road from where the Bristol Exhibition used to be held. Dilution is 4-12 % for machining. I use 8%. Cost in 2017 was around GBP100 for the 20 litres.
I bought the 20 litre drum in 2017 and am still using it and I reckon my great great great grandson might still be using the same drum such is the dilution and low consumption in the Fogbuster.
If you want a litre bottle full to try (which will last you ages) send me a PM with your shipping address.
|Thread: 3D Printed CNC soft jaws for work holding|
Thank you DrDave and Bazyle, glad you found it interesting and maybe of use.
In the ME world I have come to realise that nothing is ever new and it has always been done by someone else some other time and probably better with a plethora of internet links to back this up. The result is many of us feel inhibited in making contributions to forums fearing we open ourselves to criticisms, NIH responses and other such belittlements .... but here goes.
Using CAD/CAM it is relatively easy to create soft jaws to hold complex shapes while undertaking machining operations. Normally this is done by creating mirror image cavities in aluminium soft jaws mounted in place of the standard jaws in the machine vice.
Where the need is just for a simple work holding to deck off side two stock I have had a great success using 3D printed soft jaws. They are quick and easy to design in Fusion using the Project function. They can be 3D printed as a background operation rather than loading the mill with the need to machine aluminium versions.
It is not a panacea for the need to use complex high accuracy metal soft jaws but for simple decking operations it is very useful technique.
So accepting that someone somewhere is probably already doing it, think of this as a reminder of an option to put in your armoury. There are a couple of examples here of clock related parts I have run using this technique.
|Thread: CAM software for CNC Lathes - With C axis and constrained live tool|
Thanks for the link Joe, I will give it a look.
|Thread: Total cost + import for Tormach PCNC 440, and alternatives?|
I foolishly looked at Naomi Wu's YouTube channel and think I am now mentally scarred for the rest of my days ... what did come to mind however were two things .... support and support and I think that is where Tormach scores.
Going to have a lie down in a darkened room.
I echo you sequence. I made my tool zero from a piece of silver steel in a standard TTS collet. It has a domed end and measures the same 'height' as the Haimer under compression at 'zero'.
I have edited the Fusion to Tormach export config to create a G37/G37.1 after every tool change with a soft switch in the export options if I don't need it. While this is a nice automated routine in program, you have to remember to zero the nose on switch on. I have added a visual text prompt to this effect in my spindle warm up routines but still forget if I get distracted ...
Because the 440 has limited Z I also have added a config option for a G53 move to get the tool up and out of the way at every tool change regardless of any G37 activity.
If I were you Steve I would get your feet under the table with the hobbyist free licence and then wait for Autodesk to offer one of their discounted licence deals that crop up every now and again. I jumped when they offered 50% off on a 3 year deal.
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