LCGB Forums

Are the top two threads on a horncasting deep enough to fit a Heli coil.

gizmo wrote:Are the top two threads on a horncasting deep enough to fit a Heli coil.

Yes you can get different length helicoils though

Toddy wrote:

gizmo wrote:Are the top two threads on a horncasting deep enough to fit a Heli coil.

Yes you can get different length helicoils though

Nice one Thanks Toddy. Just ordered some.

Something I tend to do nowadays with any helicoil and especially so when they're into ally, is to soak the helicoil in thread lock (Green, so a strong one) & then run a tap through it when it's had time to dry.

Should last pretty much forever then.

You can also stack them so having shorter ones is generally a good idea as shortening a longer helicoil can leave a sharp edge at the top.

Toddy wrote:

gizmo wrote:Are the top two threads on a horncasting deep enough to fit a Heli coil.

Yes you can get different length helicoils though

+1
just done mine with a 5mm long M5

LambrettaMarky wrote:Something I tend to do nowadays with any helicoil and especially so when they're into ally, is to soak the helicoil in thread lock (Green, so a strong one) & then run a tap through it when it's had time to dry.

Should last pretty much forever then.

You can also stack them so having shorter ones is generally a good idea as shortening a longer helicoil can leave a sharp edge at the top.

Need to be a bit careful about running a tap down the inside of a Helicoil.
You've got 2 very hard materials here. The tap can snatch and bind to the Helicoil usually resulting in dissapointment.
I prefer to use a standard soft screw and run it in and out with some Toothpaste to bed the thread. Sounds a bit unconventional but it works.
if you need to shorten a Helicoil,then I find the slitting disc on a Dremmel works best. Deburring the cut afterwards is paramount.

We all have our ways. I have found that Helicoils just need a clean through & alignment once inserted which is where the tap has helped me over the years. You're not removing material with the tap, as like you say they are HARD...