The Home Machinist!

I bought 50lb of Pretrobond off Amazon - its not exactly cheap at $100 but was free shipping. Was a lot faster and easier than trying to source anything locally or make greensand myself. (sounds like you are experiencing the same problems I encountered when trying to source foundry stand - its a ro...

makinsmoke wrote: ↑Mon Mar 21, 2022 8:33 am Man, if you could only upsize the K brake system to
1-1/2”!!!!!

It’s 3D CAD. I can have it for you in about 1 minute.

Really.

C.

KOZO! In an effort to upgrade our D&RGW freight trucks to complement the Kozo K-27, we are now going to be casting the wheels in ZA-12 for added 2-side detail. ZA-12 is an extremely durable and corrosion resistant alloy which should provide years of faithful service. Seen here is the drag portio...

Rayerroad wrote: ↑Mon Mar 07, 2022 10:34 am I guess but I’m talking 2 1/2” scale ?
What size are the markers ?

They are 2 1/2" scale as you requested.

C.

Mike Walsh wrote: ↑Thu Mar 10, 2022 6:33 am Your link just returns to the front page of SendCutSend.

Yes, as designed it sets a cookie and then you are free to use the site as intended. You can enter the discount code at checkout.

C.

Hi folks. We are very happy to announce our new partnership with laser cutting service provider SendCutSend . They are true leaders in the field and they consistently turn out high quality, affordable work quickly and within the most demanding of specifications. Please use our affiliate link below a...

Like these?

Chris

Looks great! Here is a lot of info on using ceramic slurry if you view many of the videos shown on the right : https://www.youtube.com/watch?v=nVZ2PeUd5tw Thanks Ronald. This info on the slurry process for investment casting seems very interesting. How many coats did you find that you needed for go...

Sooo... Here's where the pattern stands. I completely redid it for more accuracy and detail. Shown here is 1 1/2" scale, but I can print it out here at the shop in any scale up to 5". The geometry around the legs and feet was a BEAR to get right.

Chris

Checking on updates to this. I am getting my 7 1/2” gasser out of storage for the Great Train Show Boise February 5-6 and have budgeted funds for a few upgrades including 2 1/2” scale couplers. But this COVID stuff is hitting Idaho hard, wife tested positive yesterday, the kids and I are pretty sic...

Thanks Chris, I'm also going to do some experimenting with lost foam. Do you know of any 3D printing foam medium that would be suitable for lost foam casting? One of my live steam buddies is a 3D printer and we may be able to collaborate on a few things. John https://us.polymaker.com/products/polyc...

I would use a different approach, Lost Foam. I have been working for decades with Lost Foam. Hi Ronald. You pose an interesting alternative. While I don't think foam is the right choice for me given the size of my production runs, the process itself is a good idea. There are special filaments avail...