Wooden ore cars

[finescalerr]

It may just be the photo but maybe the stained wood could use another application. SilverWood fades. -- Russ

[Hauk]

More than a 120 days has passed since I last updated this post, but I have not given up modeling.
Just bumping the thread with a photo of four brake stands (?) :




Boring stuff to make as I have built several oft hem before. But they just have to be made. Next time I think I will have them cast.

[fspg2]

Hauk, good to hear that it will go on.
The brake stands looks good!
Sometimes boring stuff will be rewarded by the result 

[Ray Dunakin]

Nice to see some progress again.

[Bill Gill]

Hauk, Good to see you're still working on this project. Nice details with the brake stands.

[Peter_T1958]

At long last we have received a sign of life from your work. I am very happy, thank you!
Peter

[finescalerr]

Building brake stands or other repetitive details is a little like performing music: You may already have played the piece a thousand times but the challenge is what you bring to it on any given day. Very adequate fabrication. -- Russ

[Hydrostat]

Hauk,

glad to see some very fine progress! Hope to see more ...

Volker

[Hauk]

Hauk,

glad to see some very fine progress! Hope to see more ...

Volker

Did some more boring work tonight, so things are moving along slowly...

[Hauk]

Thanks a lot for the interest in my ramblings!

A little progress report tonight. To make room for the axle points I needed to mill a 1,1mm wide and 1,8mm deep slot in the back of the leaf spring/journal box castings: 



The brass alloy in these castings seems to be very hard, and this seemingly trivial task came at cost of 4 mill bits. Fortunately, they were cheap Chinese eBay bits, but perhaps this also was part of the problem?

The bits were regular steel, 2 flute. For the first attempts I used 2mm/sec feed and the cuts 0,3mm deep. Spindle speed around 20 000. But as the bits broke at the very end of the slot milling, I decreased the feed speed to 1mm/sec. Then it worked quite OK.

Any suggestions from you serious machinists out there? Should I have used a carbide milling bit? 3 or 4 flutes? Any other opinions on milling and drilling brass castings?


To finish off tonights report, here is on of the two underframes I am building in parallell:



Three nights of work produced the swan necks, installation of the couplers, preparing and installing of the spring/journalboxes and adding the journal box covers. Not to bad in my not so humble opinion!

[finescalerr]

Your work is just gorgeous.

Did you use a lubricant when you drilled? I know virtually nothing about such things but remember reading about lubrication helping to preserve drill bits, cutters, and other tools.

Russ

[Bill Gill]

Watching with great enjoyment! It looks vey good. You got a lot done in a night.
I got some cheap Chinese bits for my pin vise and broke several drilling into plain old styrene - your bits may have been a large part of your breakage as well.

[Allan G]

I love what Hauk calls "a little progress"! Wonderful, beautiful, incredible progress.....Allan

[lab-dad]

I wish you modeled in 1/16th scale!
Stunning as always!
Marty

[sbranstetter]

Wonderful work!