Here is a list of all the postings tractionengine42 has made in our forums. Click on a thread name to jump to the thread.
|Thread: first go at Tig Welding|
I have been thinking about tig, a friend of mine uses sil-bronze for welding/brazing motor cycle frames.
Edited By tractionengine42 on 20/11/2014 23:21:08
Edited By tractionengine42 on 20/11/2014 23:23:29
|Thread: Shaper problem|
As indicated by Robbo, it's a deliberate feature to prevent damage should the operator allow the table to move past the end of it's stroke on power feed. I frequently set the auto feed on my Elliott and walk away to do something else, a couple of times I have not returned in time before the table reached the end of its stroke, this feature prevented damage to the feed screw etc. it's a good feature to have and keep.
Bert, have a look in your control panel - programs and look down the list for any unexpected programs.
I found 2 programs had been installed without my knowledge, one was called something like "shopad", after un-installing the programs this problem disappeared.
|Thread: arduino uses ?|
I found these 2 books very good for a complete beginner. I would recommend Getting Started with Sketches as a first buy. These combined with an Arduino starter kit got me going.
Aduino uses: -
Could an Arduno board be used to synchronise a mill spindle (with encoder) with a stepper driven rotary table/head to allow gear hobbling on the milling machine? I have the CES hobbing machine castings under, maybe here is an opportunity to enhance the machine and eliminate all those gear trains needed?
Convert a hand operated surface grinder to automatic operation using stepper motors, the idea being you can input the X traverse and feed rate + y traverse, feed rate and step over per pass. Maybe OTT for this type of board?
I have no electronics experience but I have had a play with an arduino Uno and found it quit fascinating. I used one for a work project cycling hydraulic cylinders under test. I arranged it so that you input the advance and retract times and the no of cycles required, The arduno interfaces the pump control box via a relay board, it starts the pump, operates the advance/retract solenoid valve for the required no cycles then stops the pump. Via a pressure switch, if the pressure does not increase (probably due to a hose/seal failure) after a few seconds it stops the test. It also monitors the pump temperature and stops the test it exceeds 50degC.+ a few flashing LED's to add interest This was a very good learning exercise and has worked well for the last 6 months.
|Thread: Boiler thickness and pressure|
If your model is to be insured and steamed in public, should it not be the case of establishing what design stress, joint factor and safety margins are acceptable to the boiler inspector and insurance company. Then the design can be worked out to meet their requirements and subsequently approved by them. In other words what code of practice do they accept?
Although you have done some testing to justify to yourself the safety of your design these are unlikely to be taken into consideration by your boiler inspector or insurance company unless very well documented and maybe also witnessed.
I hope this is useful info.
|Thread: Sourcing deoxy copper plate|
There's a explanation of hydrogen embrittlement in copper here, in particular refer to text just above fig 16.
Ye looks like C101 should be avoided as it's not oxygen free, apologies for my bum steer.
There's some comprehensive technical data on that Cup Alloys website, very interesting.
C101 is 99.9% pure copper, not absolutely sure if that's what you need but CES do sell it in 16 swg
|Thread: Free Plastic|
No desperation at all, please take your time.
I also sent a PM and payment on 5th and have not received any PM or confirmation.
15.5mm will probably be the nearest standard metric drill available.
Drilling 15.5mm the reaming 16mm will be perfectly OK. Less than 15.5 mm will not be desirable.
Where possible I prefer to bore the hole before reaming, I would drill 15mm, bore to 15.7mm them ream 16mm using cutting fluid when reaming steel.
|Thread: Floor covering|
Originally I painted my concrete floor with industrial floor paint, after a few years the paint was very worn and concrete dust was becoming a problem.
I sealed all the worn areas and covered the entire floor with these interlocking tiles, I have found these very durable and comfortable, in my view worth the effort and money.
|Thread: Really Silly Question - rpm facing off large diameters|
I think maybe Neil is referring to feeding across the work face manually, not on auto feed. So if you increase the rpm you have to turn the feed screw faster to maintain the feed rate in thou's/rev.
|Thread: Free Plastic|
I am waiting patiently, no hurry. Very much appreciate your time and effort, this is very generous of you.
|Thread: Drill deep hole so on a lathe. I|
Jason is referring to Model Engineer magazine, not Model Engineers Workshop.
|Thread: HSS cutting speed calculation|
That makes sense now and useful to know.
The article needs a revision.
I was reading through Practical Engineer part 1 article on this forum regarding cutting speeds but I am a bit confused.
The article states:
1" x 375 = 375 RPM for steel
1/2" x 375 = 188 RPM for steel
1/8" x 375 = 47 RPM for steel
What am I missing?
Edited By tractionengine42 on 10/08/2014 07:16:13
|Thread: What did you do today? (2014)|
Very interesting hat posts, It's amazing the very diverse things you can learn on this forum.
I've only ever worn a woolly pompom hat. Soon I hope to be steaming my 3" scale Allchin traction engine, so that may be time for a suitable hat or cap.
The 1-1/2" scale drawing show a dummy displacement lubricator, for my 3" scale I decided to make a working version. Finished it over the weekend, here's the parts and the finished item fitted to the engine. Turned out quite well I think.
|Thread: Making A bolt for my motocycle|
En57T is a high tensile stainless that is commonly used. it's no more difficult to machine than En16T/En24T and of similar strength. I bought some from M Machine, some other ME suppliers also supply this material.
Edit - I have not had any problem cutting threads using standard high speed steel dies using a good cutting lubricant. For turning I have used carbide tools but high speed steel can be used at low speed.
Edited By tractionengine42 on 22/07/2014 08:35:44
|Thread: WM 16 Milling Vice|
I am very happy with a 3 inch SOBA bought from Chronos about 10 years ago.
I have no connection with Chronos .
Edited By tractionengine42 on 19/07/2014 21:43:12
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