Model Engine Maker

Help! => Hints, Tips & Tricks => Topic started by: sbwhart on July 29, 2018, 11:04:50 AM

Title: Friction Turning a Smoke Box Door
Post by: sbwhart on July 29, 2018, 11:04:50 AM
Hi I thought this would be of interest to you chaps. Friction Turning a Smoke Box door for a 5" Gauge Loco. Basically what I've done is covered the face plate with masking tape and trapped the door up against the face plate using a running centre the friction gives enough drive to enable you to machine across the face.

This video will shows you how.

uTed181mkfc
Cheers

Stew
Title: Re: Friction Turning a Smoke Box Door
Post by: Steamer5 on July 29, 2018, 12:39:17 PM
Hi Stew,
 Looks good, file that away for the future!

Cheers Kerrin
Title: Re: Friction Turning a Smoke Box Door
Post by: b.lindsey on July 29, 2018, 12:43:15 PM
Friction can be a good thing at times!!  Nicely done Stew.

Bill
Title: Re: Friction Turning a Smoke Box Door
Post by: cheepo45 on July 29, 2018, 02:27:39 PM
I just did a large plate like this last week.
I cleaned the chuck face and the part well with alcohol, and used double faced tape.
After pressing the part against the chuck face with the tailstock for a few minutes, i was able to back the center off to face the first inch or so, then move the center back up against the part and complete the facing.
This way you can face the entire part. The tape also helps to prevent slippage so you can use less tailstock pressure to avoid warping thin parts.
 Scott
Title: Re: Friction Turning a Smoke Box Door
Post by: Gas_mantle on July 29, 2018, 08:35:16 PM
Hi Stew, I've used a similar technique but used double sided sticky tape from the Poundshop.

It must be the only thing in the Poundshop that is worth the cost but their tape is incredibly strong and worth 10x the cost. I used it recently to friction turn a 2" dia cylinder cover, although the contact surface area was small I had to force the bond apart with knives to free it  :)