Wagon chassis test

[Mountain]

Just a question. The axlebox assemblies. Can they be glued into position? If so, one can 3D print just them and glue them into position onto the rest of the chassis.

could be done pretty easily, either the boxes or the whole W iron with a suitable slot to fit into. could go for a compensated axle at one end, lots of options. thinking though once the width is sorted (its not much work to adjust it) I can basically lock it and re-use as needed. basically print a kit then build it. however if I can get the bulk as one print its a lot more accurate

I was just thinking that it is a good way to save the other chassis.

[aleopardstail]

Just a question. The axlebox assemblies. Can they be glued into position? If so, one can 3D print just them and glue them into position onto the rest of the chassis.

could be done pretty easily, either the boxes or the whole W iron with a suitable slot to fit into. could go for a compensated axle at one end, lots of options. thinking though once the width is sorted (its not much work to adjust it) I can basically lock it and re-use as needed. basically print a kit then build it. however if I can get the bulk as one print its a lot more accurate

I was just thinking that it is a good way to save the other chassis.

oh the other one is unfinished and a throw away anyway, lacks coupling, buffers, brake gear. will probably end up with half a dozen or so test ones. given the bearings and wheels don't get glued they are reused. only "waste" is about £0.25 of resin each time

having see the price of couplings I'm pondering a home made solution for that too. given these will be block rakes (probably) some simple bar coupling makes sense, then tension lock at either end. think NEM pockets are worth considering though. Sam on his channel managed 3d printed couplings that worked so may give that a go as well

[Mountain]

The thought to copy something like Hornby used to do where the couplings and the chassis were made in one piece comes to mind?

[aleopardstail]

The thought to copy something like Hornby used to do where the couplings and the chassis were made in one piece comes to mind?

for big D ring couplers that would be pretty simple to do, I think even with something that ugly having them removable would make more sense - easier to make from a different material for one thing

[aleopardstail]

Mark 3! (Failure!)

went with a finescale version for the third test, just to see what was possible

modelled fine, actually printed decently, but too fragile to remove from the supports

sides and bottom of the W Irons ripped on all four, one mostly ok, one detached completely. ok scale steel thickness doesn't work, but once cured its almost viable, likely just need to double the thickness and that bit works

string hanger detail came out nicely, sadly the axle bearing holes were slightly too small so I can't test if the width is where it needs to be, as such testing the buffer heights also failed (only crude buffers anyway so far) - a Mk4 will be started tomorrow.

this one lacked rivet detailing on the chassis itself, was more a test of finescale W Irons and axle boxes. there is space to go a bit thicker on the iron work anyway on the inside where it won't be seen, and still have the springs clearly outside the iron work on their own hangers.

think a clean up of the IPA this gets washed in is also needed to better flush the axle boxes out.

[Phred]

Argh! Still, it will be all the sweeter when you get it to work.
Even professional 3d printers seem to have trouble with brittleness though. I bought some 1/76th figures from Modelu and one young lady's left leg broke off just under the pressure of the paint brush.

[aleopardstail]

Argh! Still, it will be all the sweeter when you get it to work.
Even professional 3d printers seem to have trouble with brittleness though. I bought some 1/76th figures from Modelu and one young lady's left leg broke off just under the pressure of the paint brush.

of this isn't a brittle failure, partly because the ABS like resin has some flex which makes it good for this, its just too thin and fragile before it has been cured, the support attachments are actually marginally thicker so its tearing. I could cure it and cut away but I think if the W Irons go three times this thickness to the rear once painted it won't show and it will be stronger

I have some of the more brittle resins in translucent colours, good for some things but very fragile. the stuff I use I use for gaming models, they get dropped and bounce (well the figures, the vehicles would probably shatter)

[Mountain]

Is not a failure at all! Is merely a stepping stone to success!

[aleopardstail]

Is not a failure at all! Is merely a stepping stone to success!

lol, was worth a try at least, the Mk4 CAD is sorted, still a bit crude but still testing

[Phred]

Mountain wrote ;
Is not a failure at all! Is merely a stepping stone to success!

Love it!

[Mountain]

Mountain wrote ;
Is not a failure at all! Is merely a stepping stone to success!

Love it!

I learned this when scratchbuilding, as it sometimes takes trying a few different ideas of approach before we find success, and I would not have learned what does not work unless I tried it! The "Does not work" is just as valuable to me as the "It works! " parts, as it means I have learned what to avoid!

[Mountain]

Is not a failure at all! Is merely a stepping stone to success!

lol, was worth a try at least, the Mk4 CAD is sorted, still a bit crude but still testing

Mk4.png

Test away! If it costs a few pounds or even a few hundred in experimenting, you will learn far more by experimenting yourself then if one spent the same on a course. Why? Because one can take ones time and try things.

[aleopardstail]

Is not a failure at all! Is merely a stepping stone to success!

lol, was worth a try at least, the Mk4 CAD is sorted, still a bit crude but still testing

Mk4.png

Test away! If it costs a few pounds or even a few hundred in experimenting, you will learn far more by experimenting yourself then if one spent the same on a course. Why? Because one can take ones time and try things.

exactly, book learning often tells you how to do something, it seldom tells you why, or what the alternatives are.

sadly a trend I have seen more and more in the world around me, schools used to teach how to think, now they focus entirely on what to think

[Mountain]

The foundations for what became the GCSE system in Britain actually began in Soviet Russia. See "The d eliberate dumbing down of America" or any other of her subjects on YouTube by Charlotte Isybyt. She showed how it happened to the USA (Before it came here). She was an elderly lady who was exposing things in the USA as she felt it was wrong and she happened to find herself in the midst of it!
If you have the time, it is worth looking at the link below.

https://youtu.be/tF83lavcDMo?si=37H7Y0Czv3UuPmvt

I was caught up in the midst of when this stuff came in as I was heading for 0 levels when suddenly it was "All change" and they rushed the GCSE's in. (I was the first year in Wales to t ake the exams before they introduced them to the rest of the country and to be honest, they messed them up in that first year as the grades were around two grades too low. My school had a record of having two A grades for the 120 pupils that took the exams. Some scho ols no one got an A grade. My whole county which covered a very large area with many secondary schools had just 18 A grades. They altered the exams for the next years entries and nearly everyone had A grades! BUT they never altered our grades! A few alterations in standards have been changed and yet all the ones who did the exams before were never changed, leaving employers in Wales having to abandon the exam result grades and having pote tial employees to sit their own tests instead as employers simply didn't know who was who! Example. I had a D in my maths exam. The paper I sat the max I could get was a C. I sat the exact paper in a resit three years later (Night classes in my area would not allow anyone to sit an A grade paper. I was told I had to move to England to do an A grade exam due to Welsh budgets not allowing them to buy A grade papers). I got 100% in the exam and had a C grade. It shows how the GCSE system is so restrictive and does not allow tallented people to shine through. (Maths is not my strong subject to be honest as I am a visual thinker!)

[aleopardstail]

The foundations for what became the GCSE system in Britain actually began in Soviet Russia. See "The d eliberate dumbing down of America" or any other of her subjects on YouTube by Charlotte Isybyt. She showed how it happened to the USA (Before it came here). She was an elderly lady who was exposing things in the USA as she felt it was wrong and she happened to find herself in the midst of it!
If you have the time, it is worth looking at the link below.

https://youtu.be/tF83lavcDMo?si=37H7Y0Czv3UuPmvt

General Collapse of Secondary Education

will check the link later