http://www.soliforum.com/topic/1847/hot … placement/

In the not to distant future I'm going to be selling them at a price of around £12 - £14 GBP + P&P (which would obviously vary depending on where in the world you are). (price depends on whether you want a thermistor or if you already have one that you'll re-use)

I'm going to provide these with meter long tails on them rather than put a plug on them, meaning you can either trim the tails and recycle your existing plugs, or just take the connections straight to the mainboard.

When I say not too distant future I mean I need to spend a little more time standing at the drill press, and polishing machines, I made the one in that thread with a hand drill and it lacks precision that the batch I'm currently making does have.

When I've completed a batch to sell I'll put a thread in the classified section, but if I could get an idea of interest in this thread that'd be great.

incidentally, £12 includes the aluminium block, threaded to fit an M6 rod (which also fits the solidoode)
which is drilled to hold a 6mm heater cartridge. (installed and secured in place with screws
includes a heater cartridge that's 36 - 40W (as said above easily enough for this machine and runs at less than half duty)
includes the hole drilled for the thermistor,
with a second hole drilled and tapped for the thermistor to be secured, (you'll need to see the thread to see the holding arrangement.
as stated I plan to just leave a 1meter/1yard tail on the heater

£14 includes all of the above and a thermistor also with a meter long tail.
all assembled and ready to use.

I am designing a different hot end for my Ultimaker and really want to switch from the single large cartridge heater, to 2 smaller heaters that will run on the original power supply circuit.

Any suggestions?

It does seam a bit overkill as it runs at only approx 30% when printing.

Because my heater resistor broke very soon too, I spent some time looking for a suitable replacement and I think I have found a resistor that fits in the Solidoodle hot end (5mm hole) and has the necessary values: AC03000006808JAC00. It's a 6.8 ohm, 3watt resistor with 4.8mm diameter. There's also a 5.6 ohm version AC03000005608JAC00. I wonder if there's an upside to one or the other?

Anyway, I ordered 10 of the 6.8 ohm and will report back if that's a suitable replacement for the stock resistor.

I get the price point thing, but I also want something that works and stays working.

SunElectric has a 5 piece min order.  I will do some digging to see if I can find a better heater rod.

If I cannot find a better fit anyone want to join on a group buy of these rods from Sun?  We will need an external heater driver that will supply 20v(that voltage makes the mini heater rod 10watt).

You'll struggle to get enough heat with a 10w heater. I don't think you could maintain 190C, even.

http://store.qu-bd.com/product.php?id_product=20

They have 12v and 24v versions of that 40w heater. Not sure if the dimensions are correct to fit the SD block, but you could just swap to their hotend assembly. You could run the 24v heater at 15-16v and be in the ballpark. Couple it with a $7 laptop power supply from ebay and you'd be in decent shape for that route.

SunElectric has a 5 piece min order.  I will do some digging to see if I can find a better heater rod.

If I cannot find a better fit anyone want to join on a group buy of these rods from Sun?  We will need an external heater driver that will supply 20v(that voltage makes the mini heater rod 10watt).

Be cautious using heaters over 20w or so. 40w cartridge heaters can put the PEEK/PTFE at >600C if they fail on, and that would certainly be toxic outgassing.thermal decomposition territory.

Has anyone ever looked into using a cartridge heater(used in real commercial and industrial thermal systems).

Found some from Sunelectric.

3.1mm Diameter and 12.7mm long 15watts are 24V for only 32$

Now I know it is 24V, but it is a real heater not a re-purposed resistor.