Looking 20 Round TSMG Magazine etc 3D Printing Files

[Digger]

I'm looking for 3D printing files (.stl format or similar) for the 20 round box magazine as well as the vertical fore grip. If anybody has these and are ok to share or know where the find them it would be much appreciated.

 

Regards,

 

Digger

[timkel]

Almost every thompson part is on grabcad.com. search "thompson" But I don't see the vertical grip.

 

Here is the 20rd magazine.

 

https://grabcad.com/library/20rd-clilp-1

[reconbob]

A word of caution. There is no way of knowing if these (any many other)

CAD files are accurate. The guys that draw them have never made the gun

or parts. While their drawing or model may look perfect and operate perfectly

in animation I would not try to do anything serious with these. For example,

If you look at the Grabcad mag it appears that there is a seam or step on the

front of the magazine which is not there on a real mag.

Even if the person doing the drawing used original drawing as a reference

it is almost a certainty that they contain errors - like accidentally using 3.568

when it should be 3.586, etc.

For fun and entertainment OK. For serious work a disaster waiting to happen.

 

Bob

[timkel]

I have printed the 20rd mag in 1:2 scale. There is no seam or step on the front of the mag. But the rib cover and bottom plate are not removable. The grab cad files are availible for download for no cost. Generally some adjustments are needed on these files to get the gcode just right.

 

image sharing

[giantpanda4]

That is Awesome!

[Digger]

Timkel,

 

Your prints look great. Printed half scale? How did that affect the resolution of the finish? Have you printed any of the springs and finer parts e.g. extractor, ejector etc? Did the Lyman sight function at all? I haven't seen any 'Colt quality' vertical foregrip models yet. I'll have to revisit some of my earlier attempts, the sculpting is the challenge for me.

 

Digger

[timkel]

Timkel,

 

Your prints look great. Printed half scale? How did that affect the resolution of the finish? Have you printed any of the springs and finer parts e.g. extractor, ejector etc? Did the Lyman sight function at all? I haven't seen any 'Colt quality' vertical foregrip models yet. I'll have to revisit some of my earlier attempts, the sculpting is the challenge for me.

 

Digger

The smaller parts require more adjustments to get right. I have not attempted any coil type springs. I don't think my printer is capable of springs.The lyman sight in the picture is one piece.

[reconbob]

Can you put up a couple of pictures of the printer and the printing process?

 

Thanks

 

Bob

[timkel]

Can you put up a couple of pictures of the printer and the printing process?

 

Thanks

 

Bob

There is a learning curve to 3D printing. But it really is a simple process. My 6 year old grandaughter has learned to print with amost no help.

Say you want to print a Thompson 1928 receiver. First search for a digital file online. Hopefully someone has already laser scanned the object and are willing to share the file. These files can be found in many different formats, .stp, stl, .igs, ect. Cura software works with .stl files. File conversion to .stl is a simple process. In Cura you can some make adjustments to size, by scale, locked or unlocked. Next save as gcode. This locks in your changes. Turn on the printer and calibrate the table. Preheat the printer to the parimeters for your media(settings for PLA). Start the print job and leave. A print job can take a few minutes to 12 hours or more.

This is a pic of a Thomp Rec in gcode.

free upload image

Edited February 28, 2017 by timkel

[timkel]

Can you put up a couple of pictures of the printer and the printing process?

 

Thanks

 

Bob

In this pic I am printing a 1:2 Thompson horizontal hand guard. The media is a "wood type" plastic impregnated with wood particles. They claim it can be sanded and stained. This is the first time I have used this media.

free upload image

Edited February 27, 2017 by timkel

[timkel]

Here I am printing a M16A2 handguard.

upload a gif

[timkel]

Just finished the Thompson handguard. Looks good. Lightly sanded the piece and applied stain. Looks good I'm pleased.

 

post a picture

 

post a picture

Edited February 28, 2017 by timkel

[timkel]

Just finished this set of Thompson wood. Ready for stain.

 

image hosting sites

[laurencen]

what make of printer are you using?

[timkel]

This is the printer I have been using. The price of this printer was only $250 delivered.

 

https://www.amazon.com/Monoprice-13860-Maker-Select-Printer/dp/B018GZBC3Y/ref=sr_1_5?s=industrial&ie=UTF8&qid=1488325546&sr=1-5&keywords=3d+printer

Edited February 28, 2017 by timkel

[laurencen]

thats pretty impressive for the cost, we use a Makerbot, its a struggle to get good quality prints, PLA it bogs down so we use ABS, never used the wood filled product.

 

are you doing any sealing of the finished product, we tried using the Acetone vapor it worked but hit and miss

[timkel]

thats pretty impressive for the cost, we use a Makerbot, its a struggle to get good quality prints, PLA it bogs down so we use ABS, never used the wood filled product.

 

are you doing any sealing of the finished product, we tried using the Acetone vapor it worked but hit and miss

The PLA has produced satisfactory results. Some parts do need additional finishing such as sanding, fitting, ect. Good bed adhesion is critical to sucessful prints. This was an issue for me early on. But thanks to youtube it's no longer a problem.

The Amazon reviews are mixed on this printer. I am very satisified with it so far. I have been printing almost every day for months without any problems.

I am aware of the "Acetone vapor" method. But I have not tried it yet.

[ppgcowboy]

Where do you purchase a 6 year old on the cheap? My IT' have flown the coup? Edited March 3, 2017 by ppgcowboy

[timkel]

This is a Remmington 700 stock. Even at 1:2 scale it was too long for my printer. So I had to "slice" the .stl in half and save as A and B files. Each half printed out perfectly. Plus it wll be easier to fit the action before gluing the halves together.

 

pic host

[laurencen]

did you print the barrel laying down, did you have issues with the underside printing round?

[timkel]

did you print the barrel laying down, did you have issues with the underside printing round?

Are you asking about printing the thompson finned barrel? I found the best orientation for printing the barrel was vertical. The chamber end was sitting on a shelf on the plate.

Each object is unique. The object orientation is an important factor in print quality. I prefer not to use support on large objects unless I have to.

Edited to add: I am not satisfied how the fins look. So I may try printing with a lower print head temp or just print a barrel without fins.

Edited March 4, 2017 by timkel

[kanemono]

3-D printers are great but they sure put a lot of craftsmen out of a job. I am one of them. Here are some of the brass prototypes I used to make for GI Joe. These were sent to China and steel injection molds were made from using a pantograph.