Suggestions for 100mm DAW macro f2.8 lens cover with damaged threads

**stemked** · 05-22-2021, 08:29 PM

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Hi All.

I'm looking for a solution to my damaged 100mm DAW macro f2.8. The very thin thin flange where filters screw in was damaged so much so that a lens cover barely holds on and often falls off. I sent it to Precision for a repair, but they quoted me a price that was 90% of the cost of the lens new so I can't justify a repair (I was pretty miffed actually at the quoted price for what seems to be a simple repair). Anyway, optically the lens is still great. I've seen other 'lens hoodies' but they all seem to fit larger diameter lenses, not a 49mm lens. I could use rubber band to hold something on, but that's less than desirable. I was hoping the collective Pentax experience here might have an answer.

Thanks in advance.

DJS

**UncleVanya** · 05-22-2021, 09:05 PM

DAW? D FA or D FA WR?

In any case try getting a filter ring without glass. If it screws in securely enough your lens cap can grab that.

Example:
https://www.adorama.com/cker49.html

MikeMcE · 05-22-2021, 09:33 PM

Originally posted by UncleVanya

DAW? D FA or D FA WR?

In any case try getting a filter ring without glass. If it screws in securely enough your lens cap can grab that.

Example:
https://www.adorama.com/cker49.html?

Some filters have a threaded ring holding the filter in, unscrew it, use as above

Hang up and DRIVE!

sbc · 05-22-2021, 09:41 PM

Super glue a filter ring to the damaged thread?

**UncleVanya** · 05-22-2021, 10:06 PM - **1 Like**

Originally posted by sbc

Super glue a filter ring to the damaged thread?

Super glue can be very corrosive near plastic and lens coatings. If you want a glue that isn’t going to cause problems I’d suggest some of the thread lockers that aren’t fully permanent.

sbc · 05-23-2021, 02:04 AM

Then use epoxy. But that would be permanent. Thread locker will never be strong enough.

SharkyCA · 05-23-2021, 02:33 AM

This has been shared before, maybe worth the money! Neewer Camera Lens Vise Repair Tool for Lens and Filter, Ring Adjustment Range 27mm to 130mm, Steel Construction: Amazon.ca: Home & Kitchen

**K(s)evin** · 05-23-2021, 02:46 AM - **1 Like**

Originally posted by SharkyCA

This has been shared before, maybe worth the money! Neewer Camera Lens Vise Repair Tool for Lens and Filter, Ring Adjustment Range 27mm to 130mm, Steel Construction: Amazon.ca: Home & Kitchen

^^^^^^^This worked very well on two different lenses for me. For only $30, it is certainly worth a try.

swanlefitte · 05-23-2021, 04:30 AM

There is a thread about fixing a dent where you can't screw a filter on. Try some search terms until you find it.
I recall it requiring hammering against a piece of curved wood until you regain the shape.

MikeMcE · 05-23-2021, 06:34 AM - **1 Like**

Originally posted by SharkyCA

This has been shared before, maybe worth the money! Neewer Camera Lens Vise Repair Tool for Lens and Filter, Ring Adjustment Range 27mm to 130mm, Steel Construction: Amazon.ca: Home & Kitchen

Had one for years, can work well to reround the rings, will not pull out top dents though

Hang up and DRIVE!

**csa** · 05-23-2021, 07:10 AM

You mentioned you could not find a lens cover small enough; try here, scroll down to see sizes available:

Hood Hat - Lens Cover | OP/TECH USA

**UncleVanya** · 05-23-2021, 07:42 AM

Originally posted by sbc

Then use epoxy. But that would be permanent. Thread locker will never be strong enough.

It’s unclear how much thread is intact, and a filter ring has a lot of surface area. Honestly even good wood glue could work even though metal isn’t the best bonding surface. This shouldn’t require epoxy - and anything permanent would prevent future repairs if desired. The key is to find the bond that’s enough without being too much that also doesn’t outgas fumes that damage the lens.

If epoxy use is tried then a tiny drop in a couple of places might be removable in the future…

**Sakura** · 05-23-2021, 08:48 AM

If you want to use glue, this
is a good product to use.

E6000 Clear Permanent Hold Craft Adhesive 1 oz. Glue - Walmart.com - Walmart.com

I used it to modify my DA60-250. Glue is needed to use a new 3d-printed baffle, so it can be used Full Frame.

It is even available in black

https://www.walmart.com/ip/Eclectic-E6000-Industrial-Adhesive-Black-2-fl-oz/26764965

**stemked** · 05-23-2021, 02:17 PM - **1 Like**

Originally posted by csa

You mentioned you could not find a lens cover small enough; try here, scroll down to see sizes available:

Hood Hat - Lens Cover | OP/TECH USA

Sakura,

That is EXACTLY what I was looking for. Thanks!

And thanks to everyone else as well. The part you screw the filters into is 40% gone so I'm going to try this.

**csa** · 05-23-2021, 03:43 PM

You're most welcome; glad I could help. I've used these on my lens for quite some time, and really love them.

05-22-2021, 08:29 PM	#1
stemked Site Supporter Join Date: Feb 2009 Location: Indianapolis Photos: Gallery \| Albums Posts: 527	Suggestions for 100mm DAW macro f2.8 lens cover with damaged threads Staff note: This post may contain affiliate links, which means Pentax Forums may earn a small commission if a visitor clicks through and makes a purchase. If you would like to support the forum directly, you may also make a donation here. Hi All. I'm looking for a solution to my damaged 100mm DAW macro f2.8. The very thin thin flange where filters screw in was damaged so much so that a lens cover barely holds on and often falls off. I sent it to Precision for a repair, but they quoted me a price that was 90% of the cost of the lens new so I can't justify a repair (I was pretty miffed actually at the quoted price for what seems to be a simple repair). Anyway, optically the lens is still great. I've seen other 'lens hoodies' but they all seem to fit larger diameter lenses, not a 49mm lens. I could use rubber band to hold something on, but that's less than desirable. I was hoping the collective Pentax experience here might have an answer. Thanks in advance. DJS

05-23-2021, 08:48 AM	#13
Sakura Site Supporter Join Date: Jan 2010 Location: Netherlands Photos: Gallery Posts: 438	If you want to use glue, this is a good product to use. E6000 Clear Permanent Hold Craft Adhesive 1 oz. Glue - Walmart.com - Walmart.com I used it to modify my DA60-250. Glue is needed to use a new 3d-printed baffle, so it can be used Full Frame. It is even available in black https://www.walmart.com/ip/Eclectic-E6000-Industrial-Adhesive-Black-2-fl-oz/26764965 Last edited by Sakura; 05-23-2021 at 09:11 AM.

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05-22-2021, 09:05 PM	#2
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,472	DAW? D FA or D FA WR? In any case try getting a filter ring without glass. If it screws in securely enough your lens cap can grab that. Example: https://www.adorama.com/cker49.html

05-22-2021, 09:33 PM	#3
MikeMcE Pentaxian Join Date: Jun 2020 Photos: Albums Posts: 1,093	Originally posted by UncleVanya DAW? D FA or D FA WR? In any case try getting a filter ring without glass. If it screws in securely enough your lens cap can grab that. Example: https://www.adorama.com/cker49.html? Some filters have a threaded ring holding the filter in, unscrew it, use as above Hang up and DRIVE!

05-22-2021, 09:41 PM	#4
sbc Pentaxian Join Date: Mar 2008 Photos: Albums Posts: 359	Super glue a filter ring to the damaged thread?

05-22-2021, 10:06 PM - 1 Like	#5
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,472	Originally posted by sbc Super glue a filter ring to the damaged thread? Super glue can be very corrosive near plastic and lens coatings. If you want a glue that isn’t going to cause problems I’d suggest some of the thread lockers that aren’t fully permanent.

05-23-2021, 02:04 AM	#6
sbc Pentaxian Join Date: Mar 2008 Photos: Albums Posts: 359	Then use epoxy. But that would be permanent. Thread locker will never be strong enough.

05-23-2021, 02:33 AM	#7
SharkyCA Pentaxian Join Date: Sep 2017 Location: Carleton Place, Ontario, Canada Photos: Gallery Posts: 806	This has been shared before, maybe worth the money! Neewer Camera Lens Vise Repair Tool for Lens and Filter, Ring Adjustment Range 27mm to 130mm, Steel Construction: Amazon.ca: Home & Kitchen

05-23-2021, 02:46 AM - 1 Like	#8
K(s)evin Site Supporter Join Date: Sep 2010 Location: Colorado Posts: 476	Originally posted by SharkyCA This has been shared before, maybe worth the money! Neewer Camera Lens Vise Repair Tool for Lens and Filter, Ring Adjustment Range 27mm to 130mm, Steel Construction: Amazon.ca: Home & Kitchen ^^^^^^^This worked very well on two different lenses for me. For only $30, it is certainly worth a try.

05-23-2021, 04:30 AM	#9
swanlefitte Pentaxian Join Date: May 2015 Location: Minneapolis Photos: Gallery Posts: 4,068	There is a thread about fixing a dent where you can't screw a filter on. Try some search terms until you find it. I recall it requiring hammering against a piece of curved wood until you regain the shape.

05-23-2021, 06:34 AM - 1 Like	#10
MikeMcE Pentaxian Join Date: Jun 2020 Photos: Albums Posts: 1,093	Originally posted by SharkyCA This has been shared before, maybe worth the money! Neewer Camera Lens Vise Repair Tool for Lens and Filter, Ring Adjustment Range 27mm to 130mm, Steel Construction: Amazon.ca: Home & Kitchen Had one for years, can work well to reround the rings, will not pull out top dents though Hang up and DRIVE!

05-23-2021, 07:10 AM	#11
csa Loyal Site Supporter Join Date: Aug 2014 Location: Montana mountains Posts: 10,133	You mentioned you could not find a lens cover small enough; try here, scroll down to see sizes available: Hood Hat - Lens Cover \| OP/TECH USA

05-23-2021, 07:42 AM	#12
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,472	Originally posted by sbc Then use epoxy. But that would be permanent. Thread locker will never be strong enough. It’s unclear how much thread is intact, and a filter ring has a lot of surface area. Honestly even good wood glue could work even though metal isn’t the best bonding surface. This shouldn’t require epoxy - and anything permanent would prevent future repairs if desired. The key is to find the bond that’s enough without being too much that also doesn’t outgas fumes that damage the lens. If epoxy use is tried then a tiny drop in a couple of places might be removable in the future…

05-23-2021, 02:17 PM - 1 Like	#14
stemked Site Supporter Join Date: Feb 2009 Location: Indianapolis Photos: Gallery \| Albums Posts: 527 Original Poster	Originally posted by csa You mentioned you could not find a lens cover small enough; try here, scroll down to see sizes available: Hood Hat - Lens Cover \| OP/TECH USA Sakura, That is EXACTLY what I was looking for. Thanks! And thanks to everyone else as well. The part you screw the filters into is 40% gone so I'm going to try this.

05-23-2021, 03:43 PM	#15
csa Loyal Site Supporter Join Date: Aug 2014 Location: Montana mountains Posts: 10,133	You're most welcome; glad I could help. I've used these on my lens for quite some time, and really love them.