HCmaker 7 Titan aero mod

Finally I've got it working. So... Important notes:

I might forget something or write wrong screw length. Excuse me for that. Next time I disassemble it, I'll measure correct length.

I used screws DINs from local store. You may try other screws. No problem.

Extruder idler handle needs roller with U-profile. There is handle model for mr95zz instead of roller. I took roller and it's pin from cheap titan-extruder kit. I've also found useful tension spring, thumb screw and nut.

There is a problem with titan-aeroheat sink and thumb screw. They do not fit to each other. Engraving tool and diamond rotary bits did it's work.

New extruder means new Z-min position. I was not able to set correct Z-Endstop position. So I drilled couple of holes in side acrylic plate and moved plate lower. And z-endstop also. Keep in mind that X-beam can't move lower than wheels can move. So table also should be raised. Maybe some m3 nuts can make table springs stronger.

Btw, Volcano might be easier assemble: no drilling. But there is no fan mount for Volcano yet. Later... some day later!

Print Settings

Unfortunately I'm sure some printed parts do not fit well to each other. They may require some sanding and cutting.

I used ABS for all the parts. Actually ABS is strongly recommended only for fan ducts.

0.4mm nozzle is perfect.

Supports is needed only for aero_idler_handle. Other parts can be printed without supports.

Some infill is needed only for hcmaker_titanaero_body. Other parts can be printed 0%infill and 3 perimeters with 1.2mm top and bottom.

Fan ducts can be placed on table "side down" for no-support print.

Fan nuts should be printed 4 times.

Sort of BOM:

For titan-aero:

• 4010 fan 24V or stock.
• Aero heatsink
• big Titan gear
• small Titan gear 22teeth or stock mk8 fit well?
• 4pcs MR95ZZ bearings
• short Nema 17 drive
• short piece PTFE tube id2 od4
• Nuts and screws:

1pcs DIN965 or M3x9

3pcs DIN7985 M3x30 or 35

1pcs DIN7985 M3x25

1pcs M3 nut

4pcs DIN7985 M3x12

Mount

• 2pcs M4x12
• 2pcs M4 nuts

Cooling

• 2pcs 4010 blower fan 24V
• 8pcs self tapping screws 2,2x9
• 4pcs m3x8

Hotend

• E3D V6 heatbreak 1.75+teflon
• Spare PTFE id2 od3 tube
• stock heatblock, thermistor and heater. You know stock heater is only 30W? Maybe V6 heatblock with 40-50W heater or Volcano is a good idea.

Electric

You have to weld at least one angle connector xh2.54 to the printerhead board.

Then crimp fan cables with xh2.54 male-connectors "2 fans in one connector".

Like that set of paired connectors

And you may like Crimper PC-2549 Crimping is also possible with teeth and pliers.So tool is optional.

Firmware and printer config

This mod requires few changes or checks or calibrations:

• Extruder motor Vref
• Extruder direction
• Extruder steps per millimeter
• nozzle offsets X and Y
• max X and Y coordinates possible

**Good luck!

Oh! One more thing. If you like to thank me, then