Author Topic: Sawmill Model  (Read 3610 times)

Offline SteamR

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Sawmill Model
« on: July 01, 2023, 02:53:23 PM »
In this post I present a working engine. This sawmill was a long lasting project for me. The saw is a scale 1:10 model of a gang saw which is today a monument of a small village. In Germany mostly gang saws were more preferred in sawmills than circular or band saws.

I did measurements and a lot of photographs and it lasts a few years to design the model and to made the drawings.
Here some photos of the original engine:







The model was made from scratch. Fortunately for the two frame parts I got castings per accident which fitted in my design.
These are some photos of the model:



















Initially my intention was to power the sawmill with a steam engine. My experience was that there are so many things to do in parallel like firing and feeding the boiler, control  the steam engine and finally control the sawmill. It was simply too complex for me. So I decided to use an electric motor to power the saw.

Here is a short video under operation:

https://youtube.com/shorts/b_S5OfpKxxo?feature=share

Richard

Online crueby

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Re: Sawmill Model
« Reply #1 on: July 01, 2023, 03:01:49 PM »
That is spectacular! Its great to have an original machine to pattern after, and be able to see all the little details. Very well done!! 

Offline Zephyrin

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Re: Sawmill Model
« Reply #2 on: July 01, 2023, 03:48:10 PM »
great model, congratulations !

how were made the sawblades ? look to be very effective, lot of saw dust !

Online Kim

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Re: Sawmill Model
« Reply #3 on: July 01, 2023, 04:04:50 PM »
That is a wonderful model!  Complete with power feed and all.  Very well done!

Kim

Online gbritnell

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Re: Sawmill Model
« Reply #4 on: July 01, 2023, 04:11:29 PM »
Outstanding model and craftsmanship!  It looks like it operates very well.
Talent unshared is talent wasted.

Offline Jo

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Re: Sawmill Model
« Reply #5 on: July 01, 2023, 04:57:38 PM »
I Love that  8) A bit different but so important that we capture all these wonderful engines of our past   :)

Jo
Enjoyment is more important than achievement.

Offline SteamR

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Re: Sawmill Model
« Reply #6 on: July 01, 2023, 05:08:10 PM »
great model, congratulations !

how were made the sawblades ? look to be very effective, lot of saw dust !

Hello Zephyrin,
Thank you for your nice comments.

For the blades I used a band saw blade. I cut short pieces out of the saw band and used a jig to prepare the blades exactly for attachment in the model saw.
Pocket saw blades are not the right matter for such a saw. It is an absolute need that the teeth of the blades are entangled which is not the case with pocket ones.
The attached foto shows the kind of fixation the blades in the moving frame:



Richard
« Last Edit: July 01, 2023, 05:28:33 PM by SteamR »

Offline SteamR

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Re: Sawmill Model
« Reply #7 on: July 01, 2023, 05:25:31 PM »
It looks like it operates very well.

Thank you gbritnell, I acknowledge your comments very much.

But let me tell a little more of the story. The attached picture shows a lot of bolts on the operators side of the saw:



All this bolts and nuts are of M2 (2 mm size). You cannot tighten these bolts as needed. A working model of that saw produces forces which leads often to loosen bolts and nuts.
A second item is physics which you can┤t deceive. The slotted transport rollers are loaded with weights on arms. This load force in a model decreases over-proportional with the volume and not with the model scale. This leads to the result that the feed of the tree trunk is a matter of problems.
Nevertheless the model works.

Richard

Offline SteamR

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Re: Sawmill Model
« Reply #8 on: July 01, 2023, 05:27:04 PM »
Thank you guys for all your nice comments.

Richard

Offline Mcgyver

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Re: Sawmill Model
« Reply #9 on: July 01, 2023, 09:47:46 PM »
A beautiful example of model engineering, well done!

Offline Roger B

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Re: Sawmill Model
« Reply #10 on: July 02, 2023, 08:50:08 AM »
Excellent model  :praise2:  :praise2:  :wine1:

There is a single (water powered) reciprocating saw at our local open air museum.
Best regards

Roger

Offline Admiral_dk

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Re: Sawmill Model
« Reply #11 on: July 02, 2023, 10:33:37 AM »
This is about as close to perfection as you can get with a model Saw - stunning details, Looks and on top of that, it Works Very well  :praise2:   :praise2:    :praise2:

I hope that you will find it a nice display area in your house for it  :cheers:

Per

Offline PJPickard

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Re: Sawmill Model
« Reply #12 on: July 02, 2023, 11:21:15 AM »
I will join with the others and congratulate you on a superb piece of miniature model making!

Offline SteamR

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Re: Sawmill Model
« Reply #13 on: July 02, 2023, 12:59:20 PM »
Thanks guys,
it is always a pleasure for me to see that people have that strong interest on technical objects

Richard

Offline SteamR

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Re: Sawmill Model
« Reply #14 on: July 02, 2023, 01:10:09 PM »

I hope that you will find it a nice display area in your house for it  :cheers:

Per

Thanks Admiral_dk for your nicely comments.

Unfortunatelly the whole saw model is 1 meter long, so there is no nice display area available. Only a few model engines are stored in a display by reason of size :) .
I call my store "engine yard" which is in my basement. See this foto:



Additionally I have remarked that I forgot to post a plant overview foto:



Richard

 

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