I created an adaptor to suit 100mm flexi hose this mounts to the back of the printer using two of the existing M3 screw holes, I also integrated waste management and collection.

Non printable parts:

2 off M3 to M5 adaptor studs (M3x10-M5x10) 

Alternatively you can use large washers (M3 form c washer) and longer m3 screws but there's more chance of stripping them.

ALL LINKS ARE SUGESTIONS TO AID PART FINDING AND ARE NOT AFFILIATED AND MAY NOT BE VALID

2 off M5 nuts

2 off M5 form A flat washers

2 off 6mm x 25mm steel dowels for the poop bin alignment pins

5 off M5 x 9.5mm threaded inserts

5 off M5 x 20mm button head screws

1.3 M Length of 3mm O-ring cord DO NOT get silicone O-ring it cant be glued with superglue

super glue

Hose clamp to suit the pipe 100-110mm

Printed parts:

Print 1 off extractor adaptor (3mf file included with pre oriented part) out of a high temp resistant material i.e ABS, ASA, HIPS etc Don't forget to tune your filament for shrinkage it makes a much bigger difference when the print is bigger!

4 walls

cubic infill

auto tree support on

layer height .2 seems pretty good

Print 2 Sealing rings (3mf included is pre-oriented)

these need a brim best printed out of a high temp material I used PETG

print solid

99 walls

no support

Print poop bin left (3mf file included is pre-oriented)

This can be any material I used PETG

no supports needed

4 walls

.2mm layer

cubic infill

Print poop bin right (3mf file included is pre-oriented)

This can be any material I used PETG

5 walls

normal auto supports

cubic infill

.2mm layer

Tools Required:

Brim and support removal tools i.e. knife nippers pliers deburring tool etc

6mm drill bit

cordless drill

8mm spanner or socket and wrench

sharp knife and cutting surface to cut O-ring cord or a PTFE tube cutter works well too

soldering iron for heat set inserts

heat set insert tool

heat source like an oven or hot air station, capable of heating the two dowel pins to above the melting temperature of the filament used i.e. PETG would be about 260c

Allen keys the come with the printer

pliers

Assembly instructions:

1.) Remove all supports and brims clean up any sharp edges

2.) On the extractor adaptor there is a piece of custom support that needs removing (it would block the waste chute) face the outlet hole down and between the two inlet holes connecting the centre rib to the rib that goes to one side this is the piece that needs removing there's a thin web of material connecting them you'll need to use the nippers that come with the printer to remove this

3.) Take 1 sealing ring, using the 3mm O-ring cord and a sharp knife place the cord in the grove. cut the cord so its the ends will meet in the grove then remove the O-ring cord from the grove. place a small amount of super glue on one end align and press together firmly the ends of the O-ring cord, once set clean any over spill with paper towel and leave to cure for an hour repeat this 3 more times for a total of 4 O-rings

4.) On the rear of the printer remove the two screws on the left and right along the outer edge  its the 2nd screw down down. insert the two m3 to m5 studs check the fit of the extractor adaptor.

5.) On the extractor adaptor there's two holes close together on the lower side this is for the poop bin these need to fit the 6mm dowels use a 6mm drill bit to open the holes up if they are too tight.

6.) Assemble the waste bin insert the M5 thread inserts into the poop bin left using a soldering iron and threaded insert tool.

7.) Place the two poop bin prints together and thread in the M5 button head screws there are small holes for an Allen key to reach through where tightening is difficult.

8.) Once the poop bin is fully assembled you'll need to install the 6mm dowels. to do this you'll want to heat up the dowels and use pilers to insert them into the two holes on the poop bin, you can do this using an oven set as hot as it will go as long as it gets them quite a bit above the softening temp of the plastic. while inserting them try to keep them as straight as possible they should be flush with the inside of the bin. allow them to cool until you can just about still move them then insert them into the mating part on the extractor adaptor hold parts until fully cooled down these should now slide in and out easily

9.) Place the poop bin to one side for now insert two of the O-rings made previously into the sealing rings and the remaining two into the extractor adaptor place the sealing rings in after making a sandwich of extractor adaptor O-ring then sealing ring.

10.) attach the extractor adaptor to the rear of the printer using the M5 nuts and M5 washers being carful to not drop the O-ring or sealing ring then fully tighten the M5 nuts the sealing rings should lay flat against the printer and the extractor adaptor may end up at an angle this is fine.

11.) Attach the flexible hose to the extractor adaptor with a hose clamp and place the waste container into position.