Thing-O-Matic 500

by benmah, published

Thing-O-Matic 500 by benmah Feb 5, 2013


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This is a scale up TOM. Its 500mm X 640mm X 640mm. Since I need a bigger build Platform I have decided to upscale my TOM.
It is still in developement progress.

Updated 50x64.skp file 18 Feb 2013.
Updated 50x64.skp file 13 Mar 2013
Updated 50x64.skp file 12 July 2013
Updated 50x64.skp file 13 August 2013
18 October 2013 redesigning the Z Axis Platform.
Updated 50x64.skp file 7 April 2014
Updated 50x64-11-Juy-2016.skp file 11-July-2016


This scale up TOM uses 2020 extrusion. Uses 10 x 640mm and 6 x 460mm 2020 extrusion. 2 x 10mm OD Linear bearing, 4 x 10mm OD linear bearing with assy, 6 x 10mm(OD) x 500mm shaft, 2 x 5mm(OD) x 580mm, Shaft support and some printed parts (still in progresss).
Updated 50x64.skp.

  • Bearing mount changed because Z axis shaft touching Y-axis drive shaft.
  • Replaced Top Extrusion with Flat Mount.
  • SC10W mounting holes realligned.
  • Y-axis Motor Mount.
    -X-axis Mount (still in progress)
  • X-axis motor mount assy.
  • 2M-17T-6W Pulley
  • 6mm belt GT2
    Updates 13 Mar 2013
  • Changed left / right Bearing mount.
  • Unfinished Z Axis Platform.
  • Stl files
    New Misumi L.stl
    Left Bearing Mount.stl
    Right Bearing Mount.stl

Updates 12 July 2013

  • extruder assy
  • extruder belt mount
  • y-axis belt mount
  • added 12 pcs misumi-L structural support
  • x-axis mount
  • y-axis endstop mount
  • C shape wire holder on extrusion
    incomplete x-axis endstop
    incomplete z-axis assy
    Update 13 Aug 2013
    Z-axis Mount
    Green colored parts to be printed.
    Stepper motor updated
    z-Axis top bearing
    updated y-axis belt mount
    Extruder motor mount
    Extruder assy

Update 7 April 2014
Remove Z axis support shafts and replaced with lead screw 8mm/rev.
changed Extruder mount
Added extruder mount bottom cap
removed X & Y axis max endstop location and replaced with X & Y Min Endstop location.
Replace X-axis belt drive with tension string drive.

Update 11 July 2016
Extended the length for Z-axis Platform support. Some Issue on inserting the screw. Need to modify.
Shifted Extruder board to top with holder assy.
Added Safety Cut-off Board holder bracket.
Changed Extruder assy on X-axis - Width extended, belt mounting changed, Stronger assy.

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Oh, in the skp file you have a lot of printed parts that aren't in the thing files...can you post all of those? Maybe and updated BOM?


May 30, 2016 - Modified May 30, 2016
benmah - in reply to snowcapjr

It'll take some time for me to do an update. Yes I do notice many stl are not there. You might need to change the stepper motor mount to fit your stepper motor. I am using a bigger motor from my junk box.

Thanks! Wish me luck!

Did you get this up and running? Any changes before I try?

May 26, 2016 - Modified May 26, 2016
benmah - in reply to snowcapjr

Yes. I did get it running. The only thing I keep changing is the z-axis platform and placement of the extruder boards due to the extruder heater and thermocouple wire length limitation. PS. I did change the end stop of X & Y Axis to the opposite side. I upload my latest SKP file.

sorry if I missed this but what size aluminum t extrusion are you building with. I am currently getting 8020 1x1 1010 series.

it 2020

Should be able to print 420mmx420mmx106. I did not want to get a new stepper motor for Z-axis. So Height will be the same as TOM.

this is cool, im building a printer using misumi 2040 and 404020(its like an l shape) mine should have a print area of 400^3+. and im using two nema 17s per axis to increase torque and speed, and i wanted to do some milling on it too. good luck!

What printing volume you aim for?

Using maker slide will end up like me using all those individual parts which will bring up cost as you have to mix and match rollers, bearings and still have to use belt and pulleys i guess. I would be looking at cheaper alternative from HIWIN (Taiwan) Linear actuators (KK type). It has everything build in. Plug in the stepper motor and some settings and print. It is also very precise.

If I saw correctly it said a precision of 1mm, which isn't all that great actually.

Might want to check out maker slide to reduce linear rail cost.

I sure want to use linear drives assembly. I found out using belt and timing pulley more expensives and hard to find. I am using htd 3mm pitch which is not worth investing because I have to use 5 pcs of it which caused my project over budgeted. I would upgrade it to linear drives later stage when all my parts are complete. Thanks DanLuc.

Like to see more ppl do this with proper extrusions. I decided to do a similar one and get rid of the belts, an expensive alternative but I think well worth it.