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Fixing my 3D printer's Missed Steps problem due to broken bearing supports

Tiertime UpBox Y Axis bearing supports broken [ Known problem !!] replaced with Aluminium

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The Novice Engineer	27/09/2020 17:15:07
85 forum posts 72 photos	My printer [A Tiertime UpBox+ with an enclosed and heated chamber] had a problem with a Y Axis layer offset that ruined the print. Examination of the printer revealed the Y axis belt was loose. This was due to the Plastic Bearing support for the Y Axis drive shaft had broken. This is a known problem with this and similar printers in the range. The previous owner had reinforced the supports with a 3D printed cover. However the Left hand support had completely fractured into 3 bits. The Manufacturer has these plastic supports available for ~$3 from China ... a 2 week wait ! Since I have modified my printer to keep the enclosure temperature up to around 60-70 C to prevent ABS prints distorting I decided that the Plastic bearing supports should be replaced with something a little more substantial in Aluminium. I removed the 2 supports and measured up the good one, fortunately the dimensions came up to whole numbers so machining was going to be a bit easier. A Tee slot cutter was used to cut the recess for the bearing After a couple of hours on the milling machine and a bit of fettling with a file and emery cloth I had a working machine again. Edited By The Novice Engineer on 27/09/2020 17:21:03 Edited By The Novice Engineer on 27/09/2020 17:32:13
Jeff Dayman	27/09/2020 18:11:34
2356 forum posts 47 photos	Great looking repair! hope it sorts out the Y axis issue for you.

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