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4mm Scale Bay Buffer Stops
4mm Scale Bay Buffer Stops
I developed this 3D print as I needed some some buffer stops for a bay platform which are compact and do not take up too much "rail estate" (rail real estate!)
I intend to sell these as a raw kit, which is straight from the printer and will need sanding and drilling, or I may sell them as pre-prepared and already stuck together. The raw kit will come in three parts; the buffer beam, and two buffers. I will also supply a spare buffer in case of breakage in transit. The raw kit will be cheaper then the pre-assembled version.
Raw Kit Instructions
Raw Kit Instructions
The raw kit is provided straight from the printer, so to speak. There will be "flash" from the printing process that needs sanding off or holes that require drilling out.
Parts in the kit:
3D printed buffer beam
3D Printed buffers (x2)
(The kit may also include one or two spare buffers)
Tools Required:
2.0 mm diameter drill (With optional pin vice to hold drill)
Course (70 or 120 grit )abrasive paper
Fine (240-400) grit abrasive paper (may be needed)
Adhesive to glue the parts together (superglue is recommended)
Adhesive to glue buffer stops to your platform
Pre-Assembly:
Before the can be used the following preparation operations will be required:
Using the course abrasive paper sand the buffer beams length ways on all sides to create "scratches" which will help simulate the wood grain. Sand the ends too, taking careful to orientate to simulate the wood grain. (Figure 4)
Although the buffer beam print does include the two blind holes for the support frame and the two outer "blind" holes for the buffers them selves, resin will often build up in them. Using the 2.0 mm diameter drill (Figure 5) held between your fingers or held with the pin vice, carefully clear out any resin from the blind holes. There is no need to go right through and out the back, but they must be cleared deep enough for the full length of the buffer spigots (Figure 6). If you do burst through the back it is not an issue as this wont be seen once the buffer stop is glues to the bay platform.
Ensure the 2mm holes are cleared of resin, and test fit each buffer into the buffer beam. (Figure 6)
Ensure the buffers flanges sit flush with the buffer beam. (Figure 7)
If any of the buffer spigots do not fit in the into the hole you may need to tickle of any flash with fine abrasive paper (Figure 8)
Assembly
Assemble the kit with super glue, ensuring the bolt heads on the buffer flanges are aligned as desired. (Figure 9) Assemble the kit with super glue, ensuring the bolt heads on the buffer flanges are aligned as desired. Paint the buffer beam in you preferred wood effect colour, and the buffers in a painted or rusted metal effect.
Pre-assembled Model
Pre-assembled Model
The pre-assembled version is ready to use right away. All it will need is painting and bonding to the platform bay in-situ.
Figure 1 - The Kit of Parts
Figure 1 - The Kit of Parts
In the kit there are:
3D printed buffer beam (1x)
3D Printed buffers (x2)
(The kit may also include one or two spare buffers)
Figure 2 - Pre-assembled
Figure 2 - Pre-assembled
The pre-assembled version is ready to use right away. All it will need is painting and bonding to the platform in-situ.
Figure 3 - Tools Required
Figure 3 - Tools Required
The tools required are:
2.0 mm diameter drill (With optional pin vice to hold drill)
Course (70 or 120 grit )abrasive paper
Fine (240-400) grit abrasive paper (may be needed)
Adhesive to glue the parts together (superglue is recommended)
Adhesive to glue uprights to your platform
Figure 4 - Wood Grain Effect
Figure 4 - Wood Grain Effect
Using the course abrasive paper sand the buffer beams length ways on all sides to create "scratches" which will help simulate the wood grain. Sand the ends too, taking careful to orientate to simulate the wood grain.
Figure 5 - Open out holes
Figure 5 - Open out holes
Although the buffer beam print does include the two blind holes for the support frame and the two outer "blind" holes for the buffers them selves, resin will often build up in them. Using the 2.0 mm diameter drill (Figure 3) held between your fingers or held with the pin vice, carefully clear out any resin from the blind holes. There is no need to go right through and out the back, but they must be cleared deep enough for the full length of the buffer spigots. If you do burst through the back it is not an issue as this wont be seen once the buffer stop is glues to the bay platform.
Figure 6 - Holes Cleared
Figure 6 - Holes Cleared
Ensure the 2mm holes are cleared of resin, and test fit each buffer into the buffer beam.
Figure 7 - Ensure Flush Fit
Figure 7 - Ensure Flush Fit
Ensure the buffers flanges sit flush with the buffer beam.
Figure 8 - Sanding the Spigot
Figure 8 - Sanding the Spigot
If any of the buffer spigots do not fit in the into the hole you may need to tickle of any flash with fine abrasive paper
Figure 9 - Finished Model
Figure 9 - Finished Model
Assemble the kit with super glue, ensuring the bolt heads on the buffer flanges are aligned as desired.
Paint the buffer beam in you preferred wood effect colour, and the buffers in a painted or rusted metal effect.
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