{ "conclusion_raw": "", "conclusion_rendered": "", "difficulty": "Moderate", "documents": [], "flags": [ { "title": "In Progress", "flagid": "GUIDE_IN_PROGRESS", "text": "This guide is currently being written. Reload periodically to see the latest changes." } ], "guideid": 3, "image": { "id": 160, "guid": "446EXrpQDkXZqYgZ", "mini": "https:\/\/d3t0tbmlie281e.cloudfront.net\/igi\/bunnyscience\/446EXrpQDkXZqYgZ.mini", "thumbnail": "https:\/\/d3t0tbmlie281e.cloudfront.net\/igi\/bunnyscience\/446EXrpQDkXZqYgZ.thumbnail", "140x105": "https:\/\/d3t0tbmlie281e.cloudfront.net\/igi\/bunnyscience\/446EXrpQDkXZqYgZ.140x105", "200x150": "https:\/\/d3t0tbmlie281e.cloudfront.net\/igi\/bunnyscience\/446EXrpQDkXZqYgZ.200x150", "standard": "https:\/\/d3t0tbmlie281e.cloudfront.net\/igi\/bunnyscience\/446EXrpQDkXZqYgZ.standard", "440x330": "https:\/\/d3t0tbmlie281e.cloudfront.net\/igi\/bunnyscience\/446EXrpQDkXZqYgZ.440x330", "medium": "https:\/\/d3t0tbmlie281e.cloudfront.net\/igi\/bunnyscience\/446EXrpQDkXZqYgZ.medium", "large": "https:\/\/d3t0tbmlie281e.cloudfront.net\/igi\/bunnyscience\/446EXrpQDkXZqYgZ.large", "original": "https:\/\/d3t0tbmlie281e.cloudfront.net\/igi\/bunnyscience\/446EXrpQDkXZqYgZ.full" }, "introduction_raw": "Universal x-carriage allows your choice of Bear or Prusa carriage with your choice of extruder. Bear\/BNB, Prusa, and Bondtech upgrade extruders are supported....\n\nBunny and Bear Geared,\nBunny and Bear Short Ears\nBear\nPrusa MK3 R3\nPrusa MK3S R4\nBondtech I3 Upgrade\n\nThis BNB extruder x-carriage has belt paths for both Bear and Prusa x-axes. The upper one is for Bear x-axis, the lower one is for Prusa x-axis. Push belt ends into slot corresponding to your axis.\n\nBecause this is based on the BNB Easy Motor Service carriage for Bear extruder, you also gain simple motor bolt access for BNB and Bear extruders.\n\nBNB Short Ears extruder should clear stock Prusa motor x-end when used with this carriage.\n\nFor Bear and BNB family extruders...\nThis carriage also moves extruder 1.5 mm closer to x-axis, but maintains same dimensions for most bolts inserted through x-carriage. Note that the 10 mm bolt just above bottom bearing that connects extruder body to x-carriage must be changed from 10 mm to 8 mm. That was the only Bear\/BNB family bolt for which there was no clearance available to compensate for the thinner carriage.\n\nFor Prusa extruders...\nCarriage still moves extruder 1.5 mm closer to x-axis, is thinner than Prusa x-carriages, and bolt mounting depths may differ from Prusa carriages. Consequently, you will need to shorten some bolts for proper fitment. Most obvious are the two MK3S bolts going through the hot end air duct. Please verify your bolt lengths before tightening. Also note that cable dress should be done \"Bear\" style rather than following Prusa conventions.\n\nCombined with the BNB Short Ear Extruder's already pushed back motor, this carriage moves the motor to a fraction of a mm in front of the Z-axis T-nut\n\nI have verified this carriage on both Bear and Prusa x-axes. It works as intended. Just be certain to use the correct insertion slot - Top for Bear, bottom for Prusa. Also, it is best to insert a short pit (two teeth long is sufficient) of belt into the empty slot BEFORE attaching belt ends.\n\nGenuine Gates 2GT belts are thinner and much easier to insert than the Chinese GT2 belts I have in stock. I would build in more clearance for the belts, but there is very little space available without weakening the belt grips.\n\nTesting on both axes reminded me why I switched to the Bear axis. It is SO MUCH easier to attach drive belt and get correct tension on the Bear axis. None the less, this universal x-carriage lets you run a BNB or Bear extruder on the Prusa x-axis.\n\nAs in the Skelestruder, you should stiffen the belt holding teeth of the carriage by stuffing the unused belt path with a two tooth long, piece of 2GT belt.\n\n STL files for this item are at https:\/\/www.thingiverse.com\/thing:3610593", "introduction_rendered": "
Universal x-carriage allows your choice of Bear or Prusa carriage with your choice of extruder. Bear\/BNB, Prusa, and Bondtech upgrade extruders are supported....<\/p>\n\n
Bunny and Bear Geared,<\/p>\n\n
Bunny and Bear Short Ears<\/p>\n\n
Bear<\/p>\n\n
Prusa MK3 R3<\/p>\n\n
Prusa MK3S R4<\/p>\n\n
Bondtech I3 Upgrade<\/p>\n\n
This BNB extruder x-carriage has belt paths for both Bear and Prusa x-axes. The upper one is for Bear x-axis, the lower one is for Prusa x-axis. Push belt ends into slot corresponding to your axis.<\/p>\n\n
Because this is based on the BNB Easy Motor Service carriage for Bear extruder, you also gain simple motor bolt access for BNB and Bear extruders.<\/p>\n\n
BNB Short Ears extruder should clear stock Prusa motor x-end when used with this carriage.<\/p>\n\n
For Bear and BNB family extruders...<\/p>\n\n
This carriage also moves extruder 1.5 mm closer to x-axis, but maintains same dimensions for most bolts inserted through x-carriage. Note that the 10 mm bolt just above bottom bearing that connects extruder body to x-carriage must be changed from 10 mm to 8 mm. That was the only Bear\/BNB family bolt for which there was no clearance available to compensate for the thinner carriage.<\/p>\n\n
For Prusa extruders...<\/p>\n\n
Carriage still moves extruder 1.5 mm closer to x-axis, is thinner than Prusa x-carriages, and bolt mounting depths may differ from Prusa carriages. Consequently, you will need to shorten some bolts for proper fitment. Most obvious are the two MK3S bolts going through the hot end air duct. Please verify your bolt lengths before tightening. Also note that cable dress should be done "Bear" style rather than following Prusa conventions.<\/p>\n\n
Combined with the BNB Short Ear Extruder's already pushed back motor, this carriage moves the motor to a fraction of a mm in front of the Z-axis T-nut<\/p>\n\n
I have verified this carriage on both Bear and Prusa x-axes. It works as intended. Just be certain to use the correct insertion slot - Top for Bear, bottom for Prusa. Also, it is best to insert a short pit (two teeth long is sufficient) of belt into the empty slot BEFORE attaching belt ends.<\/p>\n\n
Genuine Gates 2GT belts are thinner and much easier to insert than the Chinese GT2 belts I have in stock. I would build in more clearance for the belts, but there is very little space available without weakening the belt grips.<\/p>\n\n
Testing on both axes reminded me why I switched to the Bear axis. It is SO MUCH easier to attach drive belt and get correct tension on the Bear axis. None the less, this universal x-carriage lets you run a BNB or Bear extruder on the Prusa x-axis.<\/p>\n\n
As in the Skelestruder, you should stiffen the belt holding teeth of the carriage by stuffing the unused belt path with a two tooth long, piece of 2GT belt.<\/p>\n\n
STL files for this item are at https:\/\/www.thingiverse.com\/thing:361059...<\/a><\/p>",
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"title": "BNB Universal X-Carriage",
"text_raw": "Not sure if this part has changed since the instructions were written, but I did not appear to have to do this when assembling",
"text_rendered": " Not sure if this part has changed since the instructions were written, but I did not appear to have to do this when assembling<\/p>",
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"text_raw": "I don\u2019t see any mating on the sanded side??",
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"text_raw": "These nuts must be fully seated into their pockets or 16 mm cover screws will not reach them. When fully seated they should be inset nearly 1 mm. Alternatively, 18 mm cover screws can be used, but design is for 18 mm.",
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"username": "Chris Champeau",
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"title": "BNB Universal X-Carriage",
"text_raw": "I believe there is a typo in this instruction:\n\n[quote]Alternatively, 18 mm cover screws can be used, but design is for ***16*** mm.[\/quote]",
"text_rendered": " I believe there is a typo in this instruction:<\/p>\n\n Alternatively, 18 mm cover screws can be used, but design is for 16<\/strong> mm.<\/p><\/blockquote>",
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{
"title": "Embed Square Nuts",
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{
"text_raw": "Insert three M3S square units into pockets. (Shown partially inserted)",
"bullet": "green",
"bullet_styleid": 5,
"bullet_style": {
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},
{
"text_raw": "Upper two M3S nuts have annoying tendency to fall back out after insertion. Bunnies avoid angry nut searches by locking them in place. Melt a bit of PETG filament into nut pocket entrance after nut insertion.",
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"title": "R4 ONLY - Hot End Cover Nuts",
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"text_raw": "This step is ONLY if using R4 style bodies (Prusa R4, Butterworth, Bunny and Butterworth, Bondtech Prusa Upgrade), add two extra M3 nuts.",
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"text_raw": "DO NOT INSERT THESE NUTS FOR BNBSX or BNB Short Ears extruders. BNBSX will use these holes \"backwards\" to pass a bolt directed forward.",
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{
"text_raw": "M3 nuts for Prusa R4 style hot end screws.",
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{
"title": "MK3S IR Sensor Only - Breakaway Tab",
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"text_rendered": "BNB Universal X-carriage works with both MK3 laser and MK3S IR filament sensor boards. However, MK3S is in different location and needs different access slot for cable."
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"text_raw": "Score and remove breakaway tab from x-carriage to make it MK3S compatible",
"bullet": "black",
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"text_rendered": "Score and remove breakaway tab from x-carriage to make it MK3S compatible"
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"text_raw": "Smooth edges as needed with blade or abrasive.",
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{
"title": "Belt Paths",
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"text_raw": "This carriage adapts to either Prusa or Bear style x-axes via Skelestruder-like dual belt clamp positions.",
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"text_raw": "Before inserting x-belt, strengthen the clamp system with 4 tooth pieces of GT2 belt. Otherwise, you risk eventual fatigue failure.",
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"title": "BNB Universal X-Carriage",
"text_raw": "Per a previous step, I am pretty sure the three M3 x 18 mm top cover screws are actually supposed to be three M3 x 16mm screws, that worked for me and as mentioned earlier it is designed for M3 x 16mm screws",
"text_rendered": " Per a previous step, I am pretty sure the three M3 x 18 mm top cover screws are actually supposed to be three M3 x 16mm screws, that worked for me and as mentioned earlier it is designed for M3 x 16mm screws<\/p>",
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"text_raw": "Thanks for your information! Everyone in the community praised the ++[link|https:\/\/tinyplay.io\/|tiny games|new_window=true]++. A suitable environment for your development",
"text_rendered": " Thanks for your information! Everyone in the community praised the tiny games<\/a><\/ins>. A suitable environment for your development<\/p>",
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"text_raw": "Thank you very much for the useful information that the blogs have shared. I have a gift for you [link|https:\/\/pizza-tower.io|Pizza Tower].",
"text_rendered": " Thank you very much for the useful information that the blogs have shared. I have a gift for you Pizza Tower<\/a>.<\/p>",
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"text_raw": "If you are looking for the best travel insurance company then you must visit [link|https:\/\/traveldefend.com\/|https:\/\/traveldefend.com\/] website for amazing offers and services.",
"text_rendered": " If you are looking for the best travel insurance company then you must visit https:\/\/traveldefend.com\/<\/a> website for amazing offers and services.<\/p>",
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"title": "BNB Universal X-Carriage",
"text_raw": "Thanks for this post ++[link|https:\/\/www.google.com\/|Google|new_window=true]++",
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