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Author Topic Next Topic: round house
Page: of 5

Frank Palmer
Fireman



Posted - 07/28/2020 :  09:37:09 AM  Show Profile  Visit Frank Palmer's Homepage  Reply with Quote

Making a model of SRMW's roundhouse would be a superb model. Interesting reading the description of the model. It's odd how some company's and people can get blacklisted from publications.


Frank

Country: USA | Posts: 5963 Go to Top of Page

Carl B
Fireman

Premium Member

Posted - 07/28/2020 :  09:51:08 AM  Show Profile  Reply with Quote
How was your experience with San Juan Model Co ?


Country: USA | Posts: 3989 Go to Top of Page

TRAINS1941
Engineer

Premium Member


Posted - 07/28/2020 :  10:48:15 AM  Show Profile  Reply with Quote
quote:
Originally posted by Carl B

How was your experience with San Juan Model Co ?



Carl Ijust ordered windows from them. They were in no time. With a thank you note for buying from them.


Jerry

"And in the end, itís not the years in your life that count. It's the life in your years." A. Lincoln

Country: USA | Posts: 12867 Go to Top of Page

Bernd
Fireman



Posted - 07/28/2020 :  1:27:43 PM  Show Profile  Visit Bernd's Homepage  Reply with Quote
quote:
Originally posted by Carl B

How was your experience with San Juan Model Co ?



Carl,

I got the same treatment Jerry did. 2 day priority mail and a personal hand written note. I will definitely go back for more product in the future.

Bernd


WWG1WGA

Country: USA | Posts: 3712 Go to Top of Page

Bernd
Fireman



Posted - 07/28/2020 :  1:29:15 PM  Show Profile  Visit Bernd's Homepage  Reply with Quote
quote:
Originally posted by Frank Palmer


Making a model of SRMW's roundhouse would be a superb model.


I'm hoping I can pull it off.

Bernd


WWG1WGA

Country: USA | Posts: 3712 Go to Top of Page

Bernd
Fireman



Posted - 08/07/2020 :  08:51:34 AM  Show Profile  Visit Bernd's Homepage  Reply with Quote
Quick update on the roundhouse project.

Have finalized how I'm going to make the master mold for the stone wall blocks. This will be the first of a set of molds to make the stone walls.

The backs of the, I believe, resin cast walls had a slight depression in the middle and when put on a flat surface would rock some. Using 80 grit sand paper I carefully sanded the backs some what flat so they wouldn't rock any more. Using the flat surface of my table saw to do the work.



I'm using 1/4" thick Plexiglas with a 1" border to glue, maybe screw, the rock wall to.



The sides are 3/32" thick Plexiglas that will be both glued and screwed to the bottom.



I'm using my Bridgeport milling machine with the mold base set on edge to drill holes for 2-56 screws. I'm holding the 3/32" sides so I can drill a hole through both the side and into the bottom of the mold. This will ensure proper alignment of the 3'32" sides.



I know the question, "Why are you doing so much work on a mold?" As I said I'm making a master mold that the stone blocks will be cut out and then a second master mold will be made of the wall for the roundhouse walls. If you don't start with something that is near perfect the end result will not be good looking. Yes it takes time but "near" perfection does take time.


WWG1WGA

Country: USA | Posts: 3712 Go to Top of Page

Michael Hohn
Fireman



Posted - 08/07/2020 :  09:11:58 AM  Show Profile  Visit Michael Hohn's Homepage  Reply with Quote
Youíre not going to get perfection if you donít strive for it. Itís going to be a beauty of a roundhouse.

Mike



Country: USA | Posts: 6752 Go to Top of Page

Frank Palmer
Fireman



Posted - 08/07/2020 :  09:47:37 AM  Show Profile  Visit Frank Palmer's Homepage  Reply with Quote

So let me get this straight. You're making a mold of the walls and then you're going to cut the blocks apart and reconstruct new walls.


Frank

Country: USA | Posts: 5963 Go to Top of Page

deemery
Fireman

Premium Member


Posted - 08/07/2020 :  10:52:48 AM  Show Profile  Reply with Quote
Bernd, I find it really useful to buy a stone tile (not ceramic, the stone is honed flat) and permanently sprayglue sandpaper to that stone. I think I have 2 different grits done that way. It's a necessity for working with castings to get a smooth and even surface.

Interesting to see your drilling setup!

dave


Modeling 1890s (because the voices in my head told me to)

Country: USA | Posts: 8623 Go to Top of Page

desertdrover
Engineer



Posted - 08/07/2020 :  1:05:30 PM  Show Profile  Reply with Quote
Nice progress Bernd! I like your choice for the stone wall blocks of the roundhouse. Looks as though you are putting a lot of work into this project.


Louis
Pacific Northwest Logging in the East Coast
Post count: 5000 posts added to below count.

Country: USA | Posts: 16062 Go to Top of Page

Bernd
Fireman



Posted - 08/07/2020 :  2:17:48 PM  Show Profile  Visit Bernd's Homepage  Reply with Quote
quote:
Originally posted by Michael Hohn

Youíre not going to get perfection if you donít strive for it. Itís going to be a beauty of a roundhouse.

Mike



I'm trying to control myself into taking time to do a project. One of my problems has always been to start a project and then sit there and think of all the wonderful things I'm going to do to get to the end of finishing the project as my minds eye see's it as finished. I've got several collecting dust that started out that way. After watching you guys here building such beautiful structures and other model items and the time you took to get them where you wanted them to end up I figured I need to try that. So, so far so good.

Bernd


WWG1WGA

Country: USA | Posts: 3712 Go to Top of Page

Bernd
Fireman



Posted - 08/07/2020 :  2:21:46 PM  Show Profile  Visit Bernd's Homepage  Reply with Quote
quote:
Originally posted by Frank Palmer


So let me get this straight. You're making a mold of the walls and then you're going to cut the blocks apart and reconstruct new walls.




Yes, you are correct. This way I get to control the size and position of where I want the blocks to be placed. Those molded walls is the closest I could find to the type of blocks I wanted. Also once finished with the walls I'm hoping that the roundhouse will have a different look from the kits out there.

Bernd


WWG1WGA

Country: USA | Posts: 3712 Go to Top of Page

Bernd
Fireman



Posted - 08/07/2020 :  2:25:16 PM  Show Profile  Visit Bernd's Homepage  Reply with Quote
quote:
Originally posted by deemery

Bernd, I find it really useful to buy a stone tile (not ceramic, the stone is honed flat) and permanently sprayglue sandpaper to that stone. I think I have 2 different grits done that way. It's a necessity for working with castings to get a smooth and even surface.

Interesting to see your drilling setup!

dave



Dave,


That's a great idea on gluing down the sandpaper. Since I'll be doing some sanding on the plaster walls I'll have to look into that idea. Thanks.

The drilling set up comes from years spent in the machine industry. This way the holes will match when you assemble the parts. I'll do a more in-depth post when I get around to doing that.

Bernd


WWG1WGA

Country: USA | Posts: 3712 Go to Top of Page

Bernd
Fireman



Posted - 08/07/2020 :  2:29:35 PM  Show Profile  Visit Bernd's Homepage  Reply with Quote
quote:
Originally posted by desertdrover

Nice progress Bernd! I like your choice for the stone wall blocks of the roundhouse. Looks as though you are putting a lot of work into this project.



Thanks Louis. I've a few more samples of stone walls that I'm going to use. These are the first two molds. I have six, probably 7 more molds to make. See the pictures of the items near the top of the first page.

I want to make all the molds first before I order a large amount of casting rubber and pour the molds all at once.

Bernd


WWG1WGA

Edited by - Bernd on 08/07/2020 2:33:10 PM

Country: USA | Posts: 3712 Go to Top of Page

Bill Gill
Fireman



Posted - 08/07/2020 :  3:45:45 PM  Show Profile  Reply with Quote
Bernd, just a thought...instead of cutting apart the wall into individual stones after casting it,
would it work as well to use a variety of tools (Dremel, hobby knife, small gouge and chisel to slightly change
the faces of stones so they don't look like they did originally? Then you'll have walls that don't look like any
others, but still a solid one piece casting overall?



Edited by - Bill Gill on 08/07/2020 6:59:25 PM

Country: USA | Posts: 3149 Go to Top of Page
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