FolgerTech FT-5 X Rail Mount (FT10/FT7/FT5/FT4)

by lilmikey, published

FolgerTech FT-5 X Rail Mount (FT10/FT7/FT5/FT4) by lilmikey Oct 1, 2016
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!!!These items are still WIP!!!

UPDATE 1/31: Added FT4, FT10, and FT10/FT4 Merged copies that fit the new idler design. I do not have the bolt and bearings to test with so feedback or suggestions are welcome.

UPDATE 11/20: Added a number of tweaks based on Entropy4U's feedback.

UPDATE 11/7: Added one-piece FT7 and FT10 versions merged with their FT5 counterparts.

UPDATE 10/28: Added an FT4 replacement.

UPDATE 10/4: Made a couple minor update to the size and position of the holes on the FT7 and FT10. I'm currently running all of these parts on my FT-5 without issue.

On the FolgerTech FT-5 the stock melamine parts that the X axis rail mount to require 4 m3 screws to attach to the Y axis sliders. The X axis 2020 part sits directly over the m3 screws. There is not enough counter-sink for the m3s for the rail to sit flush unless you REALLY crank down on those screws. In addition it very easy to destroy the melamine on the FT5 by cranking down too hard.

This replacement part counter-sinks the m3 screws allowing the X rail to mount flush without much effort. The replacement FT-5 also has a deeper shaft to accommodate the additional bolt length due to the counter-sink.

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Easy to print, no special settings needed. Suggest 30% or higher infill.

Be sure to trim any 'pressed' layers on the FT5. I generally have some spread on my first layer and if you cut it off the FT5 may not want to sit flush with the other pieces.

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I printed the complete piece with new idler. Works very well! ABS, Prusa i3, 235 / 80 C , no supports, rafts, or skirts.

Heya, I printed these not realizing that I have the newer idler design which the large hole doesn't work so well with. Since I'd already printed them I went ahead and designed a 'plug' to adapt to the new idler hole size here : http://www.thingiverse.com/thing:2074018

It might be more practical to have a version of your model with the smaller hole instead though...

Plug to adapt folgertech ft-5 old-idler 'ft10' pieces to new-idler hole size
by xilvar

Thanks xilvar. Uploaded designs for the new idler today. Let me know if you have any issues with them.

Awesome! Thanks! I'll print the new ones when I have a chance and replace my adapted ones.

I made these because I accidentally broke mine during the build. The newer versions do not have a large hole for the pulley area on the Y-end stop. Instead it's an m3 bolt (same as the top portion).

Sorry for the delay. Added new versions that should work with the new idler design. Let me know if you have any issues with it!

How about a raised island that fits the t-slot to locate the 2020 beam?

It's a good idea that certainly wouldn't hurt. I'm in the middle of a project at the moment but I am planning on returning to these parts and completing the motor-side of the mount as well. Will take this into consideration.

Some strange things about these parts.
-FT10 is 7mm thick, FT7 is 6.6mm thick.
-On FT10 the holes for the extrusion bolts are not on the same centerline as the carriage holes (off by about 1mm)
-The attachment point for the vertical portion of the bracket is much closer on FT10 than FT7
-3mm through hole for M3 is probably very tight

These oddities also appear in the merged parts

Thanks Entropy. I designed each independently and since it WOMM I never bothered to go back and clean up. All of your suggestions have been implemented and new versions uploaded.