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This page is full of resources designed to help you troubleshoot any issues that may occur as you use BoXZY.

103 Questions View all

I think I have a bad print head

I can get the print head to travel in X and Y, print bed raises and lowers, print head reports that it is getting hot back to the control software, but I cannot get the extruder to print.

I have tried leveling the bed, however when the unit was shipped to me there was an loose bolt inside the print head. I have opened the head and figured out where the bolt goes, reattached to the head.

So far all it does is not deposit filament. I purchased a spool of black PLA and loaded the unit with filament. The nearest thing I can figure is I damaged the extruder head when I initially loaded it. Anyone know where I can purchase a new head? I believe the heater block is still good, but I don't know what type of head it is, or where to get a new one.

Thank you in advance,

Ken

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OK, I have the head extruding PLA.

There was a jam in the white tube past the bowden tube and my PLA was not even reaching the heater block/mixing chamber. I took it apart again this morning and cleared that jam, manually fed the plastic into the tube and heated the head and kicked off the extruder and a stream of plastic escaped the head from the nozzle.

YAY!

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Well done, Ken! Persistence will prevail in the end. :)

BoXZY always wants to learn from these things in order to improve Quality Control. Was the "jam" material the same color as your filament? Or was it translucent white, like the Bowden tube? Or maybe solid white, like the support tube within the heater body?

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I think it was actually a Teflon tape. I have used the same type of tape for plumbing repairs, but did not expect to see it inside the printer. Once I manually ran it in, I have the printer printing. Now I only need to find the headless set screw that dropped on the floor and I think rolled under the desk.

Probably easier to buy a new one at a hardware store than to move the desk to get it. What is the proper size for the set screw? 3mm deep?

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The setscrew that holds the heater cartridge in place is M2.5x3. I personally use a T5 Torx screwdriver for this size, since many hex wrenches that size are of modest quality and hardess.

While we're here, I'll point out that the setscrews in the walls of the attachment cylinders are M3x3. I use a Wiha T6 Torx for those.

Hope this helps!

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Thank you Marty!

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Hi, Ken. I have part of an answer for you. I'm the BoXZY team member who assembles most of the attachments.

First a question: are you sure that the filament drive (on the back of the BoXZY) is pushing filament?

The current BoXZY extruder is very similar to the J-head, but there are many J-heads on the market, and they may not all have the same body diameter. I am sure that the fastest way to get printing is to obtain a replacement unit from BoXZY. (I can't say whether that would be by getting an entire replacement extruder attachment, or just the J-head-ish assembly. )

I will touch base with Joel and Justin, and post their recommendation here.

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The headless screw (setscrew) is a small hex-socket, I think 1.5 or 1.3 mm . You've already discovered that the setscrews in the side of the cylinder are also hex-socket. I actually use a Wiha T5 (Torx 5) to work with those, gives a much better grip.

The thermistor in your unit is probably held in by red RTV gasket compound. It should come free with no damage if you give it a little tug.

Back to the earlier question, for everyone's benefit. Yes, you CAN replace the BoXZY J-head with an equivalent unit from another vendor. Keep nozzle orifice size in mind, you will need to change a parameter if you use a larger nozzle orifice.

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Thank you Marty, however I found out that the filament is going in but when it gets to the second bowden tube, it is getting jammed at the little white tube that guides it into the J-Head. I disassembled all and cleared out the filament opened up the nozzle and reassembled it, then I re-fed the filament into the head, and it isn't getting into the JHead.

I then opened it back up and it is not getting into the white tube that guides it through the larger black tume that has the head and nozzle attached to it. I am working on fixing that now, but think that it will print once I can get filament into the head as I manually did it and it is extruding plastic if I do it manually.

Trying to figure out why it is not going through the inside tube.

*Sigh*

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@spasticken, The only thing I could find in the comments on Kickstarter that was relevant was the following. Although, it doesn't indicate a specific make/model it does seem to indicate that Boxzy can use substitutes. As more of us get/understand our Boxzys we might be able to help more with this stuff.

Here is the blurb from the Kickstarter comments:

"...We love the J-head and it's been exceptionally reliable for us. BoXZY will also quickly bolt in the Hexagon all metal hotend and many other substitutes..."

Hexagon looks to be an all metal brand/make of J-heads.

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@Noel, I found the problem. There was a blockage in the tube that joins the bowden tube to the jhead. Once I cleared that out the filament is feeding and extruding. I reassembled it and am now printing.

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Hi Marty,

Yes I am sure it is pushing filament as I took everything apart and the black pla had to be removed before I could get the Bowden tube off. (That was an experience.)

I placed an order last night on Amazon for the part that was recommended as a good replacement.

I will see how I make out with it once it gets here.

I am hoping that I didn't do too much damage and just replacing the head/print nozzle will work for me. One question, I tried to remove the heater from the block, but the headless screw in there will not come out. How do you get the heater out of the block without damaging it? Also the thermistor needs to be removed to put it onto the new block and I don't see how to make that work.

Thank you in advance,

Ken

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Probably too late to be helpful, but here are some answers.

The "headless screw" is a M2.5 setscrew. (2.5 mm thread diameter) I imagine that there's a correct-size hex wrench for that, but I use a Torx T5 screwdriver because it gives me more "bite".

The thermistors are held in with one of two materials. If it's red, it's "self-vulcanizing gasket goop" from your auto parts store. Pull with some persistence and the thermistor+goop will come out together.

If the thermistor material is white, it is "thermal heatsink plaster". Scrape off as much around the hole as you can, and then a persistent pull on the wires will get that thermistor out of there.

Hope this helps .. somebody! :)

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Ken Gross will be eternally grateful.
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