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SoliForum - 3D Printing Community → 3D Printer Discussion → Ctc question on threads
Hello all,
I have a ctc and I managed to loose the set screw that holds the extruder heater amd I don't know way thread it was. I can't seem to find it anywhere. All I know is that it's metric. If anyone knows, please let me know. Thanks
If you can not find the set-screws at a hardware supplier like Newark,
you could always get a new heat-block with set-screw, on eBay.
for about $2.
Sorry, I don't know thread size, but I do have some heater-blocks on order myself,
and could check size when I get them, if you still need it then.
Thanks. I appreciate it.
Buy an m2,m3 and m4 set screw at the hardware sore see which one fits?
Tin
Buy an m2,m3 and m4 set screw at the hardware sore see which one fits?
Tin
They are much smaller than an M2. I would say more like an m1. It is the same size as the one on an extruder gear.
M 1.5
Thanks for the reply. I've gone to the hardware store and try have nothing below m3. I'll order some m1.5 online.
The metric-thread chart, that I have, does Not list a m1.5 size !
it goes from 1.4 to 1.6
I've not received those blocks yet, since coming from China 
Note: this website shows same thing
http://www.shender4.com/metric_thread_chart.htm
Strange, get one of each and try them both.
I just saw that the chart gives 1.4x.2, 1.4x.3,1.6x.2,1.6x.35.
Anyone know which of these it would be?
If it was mine, I would drill and Tap the hole to the size of set-screws I Have ! LOL 
We Texans say 'Bigger is Always Better' !
Thats what i am thinking. Thanks
Are you sure the screw is that small? I'm pretty sure the extruder gear and pulleys on my solidoodle are M3's (which incidentally use a 1.5mm hex key).
(see here, note dimension 'j')
Are you sure the screw is that small? I'm pretty sure the extruder gear and pulleys on my solidoodle are M3's (which incidentally use a 1.5mm hex key).
(see here, note dimension 'j')
I have the same machine just the metal version. They are a 2mm screw and require a 1.5mm hex key. I just measured mine since I was moving my defective extruders nozzle up for know.
grob wrote:Are you sure the screw is that small? I'm pretty sure the extruder gear and pulleys on my solidoodle are M3's (which incidentally use a 1.5mm hex key).
(see here, note dimension 'j')
..image..I have the same machine just the metal version. They are a 2mm screw and require a 1.5mm hex key. I just measured mine since I was moving my defective extruders nozzle up for know.
Not to doubt your measurements, but if you're right then you have a completely unique set screw, which seems like a terrible waste of time and money on the part of CTC.
1.5mm hex just doesn't fit onto a 2mm set screw (the hex corner-to-corner is larger than the thread's minor diameter). Please check both those numbers? I really don't want to see the OP get sent off to special order a freaky microscopic set screw when they could have bought something in a hobby shop... 
Well he or some body else will need to measure then. I put mine back together already. Those screws are behind a fan and heatsink that has to be removed and on my machine I also have to remove the pressure spring on the extruder. I did not notice but did he say he lost both? CTC to my knowledge was/is pushing only dual extruder printers. The feed tubes are both inserted through a six inch long aluminum block then each locked in 0lace with their own set screw. So just measure the other one while it is apart.
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