Delapena Hone

Hi,

 

I was lucky enough recently to pick up a bench mounted Delapena honing machine.

 

Does anyone have or know of where I can obtain a user manual?

 

Also if anyone has any surplus tooling they wish to part with I'd be pleased to hear from them

 

A long shot I know but worth an 'ask'

 

Thanks - Ramon

Ramon

It might be worth contacting Delapena themselves. If you don't ask you don't get.

Most of these firms have an archive of old literature they may be willing to supply you with a copy. I expect at a cost, I suppose it depends how much you want it then. It may be that their spares dept may have one.

Ramon

I am sure that your question has been resolved, however definately contact Delapena Honing Equipment directly.

Website: www.delapenahoning.com

e-mail: [email protected]

phone: 01242-516341

if you have any questions in regards to Delapena products and services please feel free to contact me or Delapena directly.

Not sure if it would be of use, but I have a catalogue with the various stones/mandrels etc in from when I had mine. It is one of those machines that I very much regret getting rid of. After having to move premises I rarely used it so more or less gave it away.....and of course could of done with its use a 1000 times since!

 

I`m pretty sure I found the manual on line a while ago, i`ll have a look on my previous computer to see if I can track in down in the favorites list........

 

I see there are some for sale on Ebay from an American source, I believe the Sunnen unit is the same as well, I know the tooling is and pretty sure the machines use is the same?

Not sure if i`m aloud to post links, apologies if not.

 

But the free manual was the Sunnen one http://www.sunnen.com/ResourceDetails.aspx?ResourceID=22&ProductID=21&NavID=662

just click on the adobe red widget and it`ll download, save on your computer. Its free.

 

The link I had for the delepena hones is http://www.sunnen.com/ResourceDetails.aspx?ResourceID=22&ProductID=21&NavID=662 but they are a little pricey (£25-45ish)

 

Hope that helps.

 

 

sorry, the last link for the delaena hones should have been

 

 

just do a search for delapena, there are several listed further down.

 

p.s. just noted the date of the original posting, so sorry if i`v bombarded with info for an already found solution.

 

 

Hi There

Does anyone have any suggestions for lapping brass bores about 3/8 inch diameter and an inch or so long?

regards David

 

Hi David
How about a lead lap?

First turn a slow taper on a suitable length of say ¼ inch stock then file a small flat on 4 sides of the taper for grip.

Drill a hole to match the thin end of your taper in a largish round fishing sinker a fair bit Over 3/8 diameter.

Then hammer the taper mandrel into the lead sinker. The sinker will deform. Then chuck the mandrel and turn the sinker on the lathe to fit your bore size.

Finally roll the sinker in fine abrasive and wash off the residue in solvent. Then use it with kerosene turning slowly on the lathe or in the drill press.

As the lap wears you can tap the mandrel further into the lead to expand it. An alternative is to thread the thin end of the steel mandrel (You need to leave a parallel section when turning the mandrel) and use an undersize sleeve and nut to force the lead lap up the taper and hold it in position.

Lead is softer than brass so it should retain the abrasive rather than transferring it to the brass bore. Any lap must be softer than the work. The lap must be less than half the length of the bore to avoid creating a taper.

Never let more than half the lap show at either end of the bore while lapping.

If you want a mirror finish you may have to use several abrasives and make a new lap for each to avoid contamination of fine abrasive by larger grits. Also avoid dirt on the lap as it can also contaminate it.

Cheers
John

I have seen small flap hones (just posh versions of what John has superbly described)and also very small flexi and ball hones that are used on bronze valve guides, but am unsure on how these would work on brass? I think maybe flooding with coolant/fluid would be a good idea...

 

But I would go with John`s idea.....the other bits of kit are juat an easy (and more expensive) way of achieving this.....but it depends on how accurate you have to be I guess?

 

James.

Rgds

Dick