Supporting > Vehicles & Models
a newbie's take on the A3 switcher
Pogo_proptie:
all right i'm diving in head first in this. for the longest time metal working was in my wishlist and i finally made the jump this summer by starting to buy some machines
after finding a big-ish (for me at least) used lathe i'm starting the A3 switcher. My biggest challenge will be my complete lack of experience. Plus my machine is a home made beast made by a retired machinist and while it is rigid, it is a bit weird; the handles are counterclockwise and don't have markings. I'm still not sure how i could fit a DRO in there. maybe later.
So my take on this will be mostly from that aspect... A completely analog build with the innocence of a puppy trying to remove enough metal in order to make a train. I am quite aware that i just might hit a wall in the future but i'm doing this for the journey and not so much for the train.
i plan to use kim's strategy of swapping a bit of expensive material when i can.
so let's go with the start of the build.
First challenge was to just face the wheel puck in that gigantic chuck so soon after making a pretty bad practice wheel i got a old school solution and went straight for the chuck in a chuck.
then i started with the book's instruction
here is the 1st batches
flip it then prep for reaming. all times 8
Let's go :D
crueby:
Another big build, Wheee! :whoohoo:
Watching along here! :popcorn:
Kim:
How exciting! I remember just starting out on the tender wheels. Very exciting times. I'm glad to see you posting your build here and am looking forward to following along. :popcorn: :popcorn:
You have a very exciting, fun journey ahead!
And congrats on your new equipment too. You should post a thread over in the My Workshop area so we can see pictures of your shop and your new lathe. It's always fun to see what other people are using. And you can add to it as you get more equipment (because you KNOW you will :LittleDevil:).
Kim
Pogo_proptie:
all right new pictures coming .
this is my way to get the deph constant. touch off, then put a drill 1/8 between the cariage stop and then lock that. this was done for the groove in the wheels.
now we are on the mandrel working on the OD and the shoulder (notice the 2 indicators for depth AND radius.) quite stressful not to bump anything for 8 wheels.
this one is my attemps at triging the 3 degree slope (the math says I got 3.2 and than i figured close enough. better than 10 degrees right :Jester:)
a bunch a tapers later, we find ourselves with 8 kinda close in dimensions to each other :embarassed:
today I started with the shaft.. since i can't put i dead center on my spindle appart from turning a disposable one each time today's mission was to get the for axis to lenght with a center each way. i think im inside 1 tough between all of them. tomorow i will try to turn them between center.
what we have so far
see you in the shop everyone
cnr6400:
:ThumbsUp: :ThumbsUp: :ThumbsUp: :popcorn: :popcorn: :popcorn:
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