Chinese draft angles

[RobinParticipant @robin]

Yeeeeee-har!

I now have 8.5mm for the 5mm bolt heads, I shall have to turn something down to fit

Here's the jig…

The VFD is held down by a lump of iron and a towel, but it is located by a 5mm pin coming up from below.

Above it is a virgin Dormer 8.5mm drill bit aimed exactly at the 5mm pin below.

A slow vertical feed on the knee and lots of revs on the bit for a smooth finish.

There was 3mm of plastic behind to cut in to and I took half of it. One VFD done, one to go

[Michael GilliganParticipant @michaelgilligan61133]

Nicely done, Robin

… pity the manufacturer couldn’t cope

MichaelG.

[Pete RimmerParticipant @peterimmer30576]

I have had this problem almost identical. A few swipes with a round file was all it took to remedy.

[Ian PParticipant @ianp]

Posted by Pete Rimmer on 15/10/2022 20:37:22:

I have had this problem almost identical. A few swipes with a round file was all it took to remedy.

The OP though had already prepared tapped holes in precisely the right positions based on the VFD holes, so the round file/hole dragging technique would not work.

Ian P

[RobinParticipant @robin]

I am now waiting for M5x16 Pozi cheese heads (50 for £2 with free shipping) before I can wire it up.

While waiting I am de-clattering my splines and fitting a spindle lock.

Will I live long enough to finish this thing?

Robin

[Pete RimmerParticipant @peterimmer30576]

Posted by Ian P on 15/10/2022 21:22:56:

Posted by Pete Rimmer on 15/10/2022 20:37:22:

I have had this problem almost identical. A few swipes with a round file was all it took to remedy.

The OP though had already prepared tapped holes in precisely the right positions based on the VFD holes, so the round file/hole dragging technique would not work.

Ian P

No, it would indeed require the foresight to look at the casting and realise that there was no space for a screw head. You'd have to slot the housing before drilling the fixing holes.

[Author]

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