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I finally had it with thermistors pulling out. I guess I manhandle things too much.

Anyway, I picked up 4m .7 pitch set screws and matching tap & drill (#29)

1. Drill as deep a hole as possible without hitting the heat break on my E3D and tapped it.
2. Drill through the the center of the set screw. (Sorry, can't read the size of the bits I kept breaking...)
3. Put the PFTE tubes on the thermistor.
3. Pull the leads part way through the hole. You may have to twist to get them through.
4. Put a little Blue Magic QuickSteel around the place where the PFTE meets the glass bulb.
4. Pull the lead the rest of the way so that the bulb seats in the set screw.

I made up four of them just in case I need to change them out quickly.

This solution works with both physical sizes of thermistors - the tiny one and the larger glass bulb.

Can you throw up some pics would like to see what they look.

I just bought the eBay ones from here:

http://www.ebay.com/itm/Modular-Screw-o ... 1341736569

He took his price up $1 from when I ordered a couple months ago. With those, all you need is an M3 tap (bottoming type preferable since most thermistors are mounted in a blind hole).

The eBay ones are type 1 in the thermocouple list in the Repetier firmware family.

bdjohns1 wrote:I just bought the eBay ones from here:

http://www.ebay.com/itm/Modular-Screw-o ... 1341736569\n

I have a few of these - they are very nicely made.

Agreed. If you wanted to do his version yourself, he's using a short brass M3 male-female standoff. The thermistor gets potted in a suitable high temperature material.

The holes on the stock hotend and the E3D are both just about perfect for an M3 tapped hole, so no screwing around trying to drill a hole through a grub screw (which is usually made from hardened steel anyhow, so no wonder John broke bits trying to drill them!)

bdjohns1 wrote:Agreed. If you wanted to do his version yourself, he's using a short brass M3 male-female standoff.

My mind is blown. I was wondering the other day if it would be possible to make my own.

Yup, sorry, I posted it here - a complete brain cramp over the weekend.

http://forum.seemecnc.com/viewtopic.php?f=36&t=4663

I agree that the M3 screw in solution is better; however, I couldn't get the taps locally and I set a date of getting it done over the weekend. I took what I could find and made it work. I could have ordered but I need to print today....

A photo is included in the other post.