Underpinner help (Alfamachines Minigraf 44)

Get help and framing advice from the framing community
Post Reply
theprint.ninja
Posts: 31
Joined: Sat 23 Aug, 2014 2:09 am
Location: Dawlish, Devon
Organisation: The Print Ninja
Interests: I fly UAV's for arial photos, I spend my time printing high resolution canvasses and museum quality prints for private individuals and corporate clients alike

Underpinner help (Alfamachines Minigraf 44)

Post by theprint.ninja »

I have an issue with an Alfamachines Minigraf 44.

I purchased the unit second hand and when I had my morso installed that chap kindly installed the underpinner and gave it a service. He advised that it needed a new hammer, so sent that to me and I installed that ok. The vertical pressure regulator was loose so tried to tighten it and snapped it. So ordered a new one of Lion and installed it tonight.

While it does work a lot better, whatever I try (with pressure etc) I cannot get the v wedge to go in as far as id like for a clean finish. I have had the Minigraf machines in the past so know what they can do.

I don’t, however know how to adjust this to push the nail in further – please see attached image. Can anyone point me in the right direction please.
Attachments
IMG_1108.jpg
IMG_1108.jpg (496.48 KiB) Viewed 3400 times
theprint.ninja
Posts: 31
Joined: Sat 23 Aug, 2014 2:09 am
Location: Dawlish, Devon
Organisation: The Print Ninja
Interests: I fly UAV's for arial photos, I spend my time printing high resolution canvasses and museum quality prints for private individuals and corporate clients alike

Re: Underpinner help (Alfamachines Minigraf 44)

Post by theprint.ninja »

Of course I mean underpinner not underpinned - combination of keyboard error and auto correct - unfortunately, I can't see how to edit a title !
User avatar
prospero
Posts: 11492
Joined: Tue 05 Jun, 2007 4:16 pm
Location: Lincolnshire

Re: Underpinner help (Alfamachines Minigraf 44)

Post by prospero »

You can't. :cry:

But fortunately I can and have so done. 8)
Watch Out. There's A Humphrey About
theprint.ninja
Posts: 31
Joined: Sat 23 Aug, 2014 2:09 am
Location: Dawlish, Devon
Organisation: The Print Ninja
Interests: I fly UAV's for arial photos, I spend my time printing high resolution canvasses and museum quality prints for private individuals and corporate clients alike

Re: Underpinner help (Alfamachines Minigraf 44)

Post by theprint.ninja »

thank you!!
MarkR32
Posts: 92
Joined: Wed 29 Nov, 2017 12:41 pm
Location: Shepshed, Leicestershire
Organisation: G58 Framing
Interests: Rugby, Food, Family, Framing

Re: Underpinner help (Alfamachines Minigraf 44)

Post by MarkR32 »

Really daft question but

What pressure is the machine currently set to? I only see this when the pressure in my lines drop and in turn the pressure in the machine.

I tend to operate within the 3-4 bar range and turn the pressure up for harder woods.

I suppose the other daft question is ... are the v-nails the right way up ?

Thanks
User avatar
Mark Thornton
Posts: 241
Joined: Thu 08 Feb, 2007 4:00 pm
Location: Yorkshire
Organisation: Underpinner Spares
Interests: Red wine - lots and lots of it.
Location: Snaith, East Riding of Yorkshire
Contact:

Re: Underpinner help (Alfamachines Minigraf 44)

Post by Mark Thornton »

Daft question?

When you replaced the hammer did you fit it the correct way round? the earlier Minigraf hammers had a flat top which could be oriented either way but the newer hammers have a raised lip which must face toward the wedges.

Mark
https://www.underpinner-spares.co.uk Framing equipment spare parts - Easy online ordering
theprint.ninja
Posts: 31
Joined: Sat 23 Aug, 2014 2:09 am
Location: Dawlish, Devon
Organisation: The Print Ninja
Interests: I fly UAV's for arial photos, I spend my time printing high resolution canvasses and museum quality prints for private individuals and corporate clients alike

Re: Underpinner help (Alfamachines Minigraf 44)

Post by theprint.ninja »

That is a very interesting point, I know I pushed the hammer up so I could see the tip coming out of the carriage - and I saw it fitted in ok - I have to be honest and say I didn't check the lip on the hammer to see which way round it was pointing - I suppose the only way of finding out is to replace the hammer and rotate it 180 degrees - thank you will try that
apexmounts
Posts: 10
Joined: Thu 18 Jul, 2019 7:53 pm
Location: West Yorkshire
Organisation: Apexmounts
Interests: Piano, Gym, Skiing

Re: Underpinner help (Alfamachines Minigraf 44)

Post by apexmounts »

Hi,
I had a similar problem and it was stupidly simple but not obvious.
Does the moulding move upwards as the wedge starts to travel ?
This did not happen on deeper mouldings for me, try that.
It turned out to be that the support plunger arm that came down to
stop the moulding from rising whilst the pin was inserted was at the end of its
physical travel limit in the position it was in.
Re-adjust so it has further down travel available .
Post Reply