Search found 19 matches

by Bastelmike
Wed Oct 19, 2016 8:48 am
Forum: General Discussion
Topic: Drilling polycarbonate tubing
Replies: 16
Views: 2566

Re: Drilling polycarbonate tubing

Hi Chipmaker, I think using a stepdrill might be worthwhile to try. These drills are designed to drill large holes in very thin sheet metal and have a very small tip. Guess using a conventional 12mm drill bit could easily cause a crack or deformation in the tube wall. My suggestion would be to use a...
by Bastelmike
Thu Sep 01, 2016 1:22 pm
Forum: Casting & Foundry Work
Topic: Annealing cast iron bar stock
Replies: 15
Views: 10012

Re: Annealing cast iron bar stock

Harold,

they have this product:

http://www.glbsm.com/product-informatio ... rizers.pdf

Ist available in a paper bag, 40 kg. Enough for several lifetimes in a home foundry, I guess.

Mike
by Bastelmike
Thu Sep 01, 2016 12:31 pm
Forum: General Discussion
Topic: Weird Metric Thread on Air Compressor Switch
Replies: 35
Views: 5430

Re: Weird Metric Thread on Air Compressor Switch

One reason for this a bit weird Problems may rest in the thread flanges.
British is 55°, US NPT 60°.

If You mix this and it is not a very sloppy fit, it won't fit.
by Bastelmike
Wed Aug 17, 2016 12:49 pm
Forum: Live Steam
Topic: Where do I get red Brass and Copper in Ontario?
Replies: 15
Views: 2255

Re: Where do I get red Brass and Copper in Ontario?

Yes, C932 bronze (also known as SAE 660 bronze) is the correct stuff. I have seen that it is listed as "not recommended for brazing or soldering". I have no idea why it is listed as such. It silver solders quite well, I have even soft soldered it for non-boiler purposes. Silver solder readily wets ...
by Bastelmike
Wed Aug 17, 2016 12:20 pm
Forum: Live Steam
Topic: Where do I get red Brass and Copper in Ontario?
Replies: 15
Views: 2255

Re: Where do I get red Brass and Copper in Ontario?

Just looked at the online metals website and they do not recommend C932 for welding, brazing or soldering. Is this the correct stuff??? Hi, I try to explain it to You a bit, though I'm from Europe and European (ISO) standards differ a lot. Brass is Copper + Zinc Bronze is Copper + Tin; + maybe seve...
by Bastelmike
Sat Oct 10, 2015 9:59 am
Forum: Build Log
Topic: GE 23 ton boxcab in 7.5" gauge / 1.5" scale
Replies: 38
Views: 15609

Re: GE 23 ton boxcab in 7.5" gauge / 1.5" scale

Hi Jawn, it depends. In this case the seat axle - inside ring should be a tight fit. outside ring -bearing box more a loose fit. Always remember through temperature the axle might grow. Do not fix both bearings completely in axial direction, one bearing should have the freedom to "creep", either on ...
by Bastelmike
Sat Oct 10, 2015 12:32 am
Forum: Build Log
Topic: GE 23 ton boxcab in 7.5" gauge / 1.5" scale
Replies: 38
Views: 15609

Re: GE 23 ton boxcab in 7.5" gauge / 1.5" scale

I have some 4130 steel rod I plan to use for axles (what size should it be? I have an assortment), and 26mm OD x 9mm ID x 8mm wide ball bearings. Hi Jawn,, just for reference some data from the prototype. Modern fullsize locomotives, axle load 20-25 tons, have typically an axle Diameter between whe...