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Fixing my uncontrollable heated bed

by IDKmyName123

I had a problem with my Hatchbox Alpha where it would automatically start heating up the bed, when I would turn on the printer. The tiny symbol which indicate the bed was heating up wasn't showing up however the heated bed was still heating up. After leaving it on for a while it would soon decouple and thought that it fixed it-self ,however I found it very hot after 10 min of decoupling. I contacted Hatchbox Support numerous times about this issue, but they couldn't help me. To fix this problem I took a look inside, traced some wiring and found out that a Fotek SSR 25-DD was short circuiting. Once I had replaced this piece the heated bed worked fine. P.S. remember to not have your heated bed on the ground when you have turned on the printer. I bought a reliable SSR from https://www.ebay.com/itm/FOTEK-SSR-25-DD-Solid-State-Relay-SSR-Single-Phase-DC-DC/233386193038?hash=item3656e6b08e:g:s9oAAOSwCmBduz1m&shqty=1&isGTR=1#shId

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Retraction Settings / Bumpy prints

by wesman732

I've been getting bumpy prints. What are other people using for retraction settings. Anyone else have this problem? Seams to occur in print direction changes only, flat areas are almost perfect. I have 1.7 mm and 60 mm/Sec but it's not totally correct.

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LUBRICATION

by Ttlaser

IM STILL LEARNING BOUGHT A ALPHA AS MY SECOND PRINTER BUT WAS CURIOUS WHAT TO USE TO LUBRICATE THE SLIDES AND PIVOT ARMS.... SEEMS STUPID BUT I REALLY LIKE THE PRINTER AND DON'T WANT TO MESS IT UP

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Hatchbox hotends

by wesman732

Hatchbox hotends. I liked just replacing the whole unit so I could keep printing. Hatchbox has not had hotends for a long time. What are the exact specs for the heater cartridge and temperature sensor, and length of throat. their block is very tiny compared to others. what is that block called? I don't want to go to a more expensive brand. When it fails I want o swap it quickly. I really don't want to do PID tuning or flash the firmware. I make a volume of stuff with mine, its not a prototype to experiment with.

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